1) Raised beds are always a good idea :-) You can control the soil mix, it heats up faster in spring and stays warmer into fall, extending the growing season and raised beds are easy to manage and from which to control weeds.

2) I'm not sure what you mean by 'clean' vegetables. Soil is never 'clean' so I'm thinking maybe you mean without a lot of additives, etc? Organically? Raised bed soil is not complicated. All you need is some decent garden soil (or bagged soil) and some organic matter - compost, composted manures, etc., which you can also purchase in bags. A mix of about 3 or 4 to 1 (soil to OM) is good.

3) Not sure how to answer that ;-) I don't grow from seed but rather from starts. It's getting kind of late in the season for seeding many types of veggies but you can still do things like greens, radishes, carrots from seed. Johnny's Selected Seeds have a good selection and excellent reputation as does Territorial Seeds.

4) Yes, you can build raised beds on sloped ground. Generally, I'd recommend aligning the beds so that their long side parallels the slope. Less need to fill that way. Just make the side furthest away from the grounded slope side taller to compensate for the leveling.

5) The title is a bit ungracious and I don't mean to belittle your efforts, but hunt down a copy of Vegetable Gardening for Dummies (available on Amazon). Despite the unfortunate title, this really is a great little resource and will help you with a step by step process.

6) Do some research on 'square foot gardening' (there is even a forum here by that name). While I do not recommend the soil mix advocated by this method (unnecessarily complicated and expensive and not necessarily suitable), there is lots of good information about combining different plant types in a small space to maximize harvests.

Think of a raised bed as a way to concentrate your attention on a finite and clearly delineated area that can be somewhat isolated from the rest of the dirt. That’s all it is and that isn’t meant to belittle it.

There is no reason to assume they are supposed to be on a level surface; they’re just a containment frame and 20 degrees is not a problem. I build mine by laying a bed on the ground and digging under the high parts until the top is level. That can mean all sorts of un-levelness inside the bed and what you do there is most likely scrape it even. Whether that means removing original dirt or not is up to you and your energy level.

Biggest suggestions: don’t buy anything other than organic material (of any sort, really). Add it on, mix it up, wait and see how things work for you and your habits. Avoid fertilizers, minerals promising the moon, anything guaranteeing to add wondrously beneficial fungi, anything manufactured, any chemical. Decide on those things later.

Warning: Wall of text.

I'm one year in, but I learned a bit from my mistakes.

1. I was going to start with a raised bed for this year since I don't have
any compost of my own ready and don't feel the soil is of good growing
material if I just till for this year. So, does anyone see that as not a
smart move?

For organic gardening, soil quality is the most important, it will determine whether have have any success or not. When I started, I bought junk 'organic' home depot brand "Vigoro" soil. It is extremely heavy, with no nutrient and have zero water retention ability, which mean you water it and the next day its dry. If you can buy bulk topsoil it would be nice, but you have to be very careful who you buy it from. You have to first find out what good soil should be like, imo (!) it should not be too heavy and have a bit of a sponge feel so the roots can grow easily, but also have some structure and not too soft. It should have good water retention, for a place that is very hot with expensive water bills, this important to me. I personally like to add to my soil a good amount of peat and coconut coir for water retention. Peat moss is acidic which is good for some plants. I like coconut coir more because it seems to retain it's structure better and wick up water more evenly. With peat moss, there is more chance of getting dry spots hard to get evenly wet again, so I do not over use it in my soil mix.

The biggest mistake I did when I started was not using enough compost and not having a compost pile, this would go a long way to save money without having to spend too much on fertilizer.

Ultimately my point of view is it takes years to build up soil quality, so it's an on going process, you're not going to have great success first year with fresh soil unless its already very high quality to start with, at least that's how it was for me.

2. My goal is grow really clean vegetables. What soils or soil additives can I purchase that help me meet that mark?

This is a very complicated question and imo usually go in hand with the issue of sustainability. If that isn't important to you, there are lots of good organic soil amendment products you can use, some more effective than others. And also whether you will use animal based fertilizers, there seem to be a new vegan movement who refuses to use animal-based sources in their soil, I think it is possible if done right, but not all plant-based fertilizers are from sustainable sources.

I stopped buying soil or soil amendment from big box stores. Except "Lambert" is a peat moss based soil brand
sold at Home Depot and claimed to be sustainably harvest, I do like their peat moss. It's most convenient to look for nurseries and local companies who will
sell soil and compost, especially in bulk for wholesale prices, this is what I recommend. I also like local resources. It's very easy to get free horse manure and
compost yourself. I make compost pile from local leaves and I get free
wood chips for mulching. See if you can find local municipal piles for
leaves and wood chips, I guess some people are concerned they can have
contaminants, ymmv.

The main things I add to my soil are: leaves compost, mushroom compost, horse manure compost, worm casting, comfrey, wood chips for mulching, and less frequently: fish emulsion, rock minerals, biochar. I do admit I sometime use Espoma products to amend certain nutrients in my soil.

I personally like using local horse manure compost since they are grass eating and preferably non-juiced. If you are afraid of diseases, the manure needs to be properly composted
for months, this is also require to kill the weed seeds in the manure,
or you can buy pasteurized compost manure. Chicken, rabbit and other birds manure will have higher nutrient contents than horse and cow manure. But for even higher NPK rating, you need to look at bone meal, blood meal, feather meal, greensand, and fish based fertilizers, they have different NPK values and it's depended on what your soil needs.

When it come to pest control, like sprays, I stick with products that
are OMRI listed, however, to me OMRI is just a label like "USDA Organic"
which doesn't really mean anything about the quality of the actual
product. I would never buy MiracleGro even if it's OMRI listed,
that's just me.

3. What is the best source for super healthy seeds?

There are many places to buy seeds, from your local nursery, to many heirloom seeds companies to eBay. Unless you buy heirlooms, the usual popular hybrid seeds variety you buy regardless from where are likely sourced from Seminis, which is a seed company owned by Monsanto that control about 30% of the seed supplies. Obviously, if you live in a hot climate and obtaining seeds from plants that has grown in hot climate for many seasons will give you better results. It's more important to look for variety that does well for your climate and disease resistant. Some variety resist disease better than others.

For me it's more important to get seeds affordably as they can be pretty expensive. First place I would check is local nurseries for seedlings. I admit I like the Bonnie plants at Home Depot whenever they go on sale. Some seeds companies I like are Botanical Interests, Baker Creek, and the Seed Saver Exchange. But I like eBay as well mainly for cost saving as long as the seeds are organic (you'll just have to trust the seller and ask them). For tomatoes, imo there is no better place than TomatoFest. I am beginning to not buy from Burpee and Park Seed nowadays.

4. My land has maybe a 20 degree slope to it. Raised beds are
supposed to be on a flat surface. Can I offset by putting stones or
extra wood under the raised bed to level it and fill with extra soil?

This could be a good thing as long as you don't have run offs from rain or something. If you can observe correctly the direction of the sun for different seasons, you can build raised beds with an angle toward the sun to increase sun exposure, this generally is useful if you live in a colder climate zone, the angle sun rays hit the soil makes a big difference. You don't need to make a flat raised bed, one side can be taller with deeper soil, and this can accommodate plants that require more root spaces or need extra light exposure.

5. When I'm ready to plant is there a good step by step on that anywhere?

There is a very big YouTube organic garden community, I suggest you look there. Shameless plug: I personally like OneYardRevolution, Alberta Urban Garden, MiGardener, they have some very good tutorials and info.

6. If I want to grow to make as many meals as I can what are my best
mixes of veggies and herbs to grow for both that and the health of the
garden?

I don't think there is any right answer to that, it depend so much on your specific situation, your location and what you like to eat. I personally feel that each person have a different scenario and challenges, just because one person is very successful with one method doesn't mean it will apply or work for someone else. For starter, you should grow plants that grows well in your climate. Growing easy to grow crops and edible perennials is a good idea. Maybe plants that doesn't require so much nutrients for yield. Sweat potatoes is a stable plant for my garden because the leaves are edible and they grow insane without needing much water. I also like plants that self seed easily like malabar spinach, I will always have an abundance of these in my garden. Mustard and arugula are very easy to grow, bokchoy is an amazing producer. I also like plants that are easy to save seeds like okra.

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Side note, I used to make raised beds with woods, but I think I will stick with cinderblocks from now. I really like the fact that it is cheaper than wood (from where I am) and will last much longer. And they are modular so you can change the size of your bed easily. The only downside is they are heavy.

Also you should consider the width of your raised bed. I will no longer make raised beds wider than 3ft because I feel this is ideal size for me to be able to reach to the middle. 4ft wide gets uncomfortable for me, especially if you need to dig the middle, you don't want to stand on the soil itself and compressed it in the process.

Lastly, you should check the type of trees in your surrounding. I have serious issue with invasive roots from surrounding trees stealing nutrients from my raised beds, so I'm probably going to have to dig trenches around my beds.