Begin by checking out the "magazine" sections in the big box building supply stores and WalMart and other big box grocery and dry goods stores. You can usually find not just magazines for miscellaneous ideas but also magazines that are specifically showing floor plans (usually with visual images of the outside) that are of a particular size and/or style of house. See what you like and what you don't like that would meet your needs.

Also invest in a pad of graph paper and pencil so you can begin to sketch, to scale, what floor plan you actually want, taking inspiration from different images in the different magazines. Doing this prep before talking with a pro can make your meeting more much more productive. Remember that the final plans will need to include the width of the walls so the rooms will actually fit together.

In the meantime, you should check to be sure you have a copy of any applicable building codes/restrictions and also be sure you know where any utilities might be buried on your land.

Those magazines will likely have web pages listed and you might find purchasing a few of the magazines you find most interesting useful as well.

I googled "modern house floor plans" to find this:

https://www.google.com/search?biw=1366&bih=628&tbm=isch&sa=1&ei=LsEkXpvtLtGy5gLi8L_gDw&q=modern+house+floor+plans&oq=modern+house+floor+plans&gs_l=img.3..0l10.714254.719162..719832...0.0..1.426.4952.9j5j4j5j2......0....1..gws-wiz-img.....0..0i67j0i131.I3ziAa6ekso&ved=0ahUKEwibvO-lxZDnAhVRmVkKHWL4D_wQ4dUDCAY&uact=5#spf=1579467778700

Thank u very much.

Make sure you have a plat of your property and pay attention to any slopes on your property. A house that will work on a slope might not work on level ground and vise versa. There are usually "set back" rules -- how much space you must leave between house and property line and/or house and any utility easements. The post office should be able to give you guidance on any rules regarding your mail box.

Do pay attention to which side of your lot is north, south, east, west and which side of your lot has the most shade and/or better/worse view -- that can matter as you choose your floor plan. Sometimes you can find a floor plan you like and "flip" it, making east be west and vise versa.

That modern house on your idea page is very attractive. You likely need a nearly flat lot for that.

One thing about modern houses that you need to remember is that there is no attic for ventilation, requiring special attention be paid to ceiling/roofing, adding costs because heat, and usually moisture with it. This can matter in some places more than others -- do talk with your architect about that.

Pinterest. Eichler network. The Agency.

Careful, most photos are >$1mil projects.

Not a pro.

If you identify your geographic location, you may find a Houzz architect to help you.

Modern houses are not limited to flat roofs and not all flat roofs need ventilation.

Tell us where you will be building.

If you are ambitious about design and have little experience in such things, hiring an architect is essential and well worth the cost.

LOL, I would suggest hiring an architect. Houses should seldom just be plopped onto a building site. A site analysis should be done to take advantage of views, channel winds, optimized sun and shade and many other factors.

The point of an architect over and above design is they also design for the plot of land which is complicated sometimes . I have no idea why someone thinks modern houses don’t have attics of some sort. Them come in all shapes and sizes just like any house. Taking on designing and building a house is not for a first timer . Even working as your own GC will be over your head.