This might be a better question to pose on the Home Decorating forum, where some posters have zillions of test jars of paint. I would look for a local dealer.

South Cypress.....I think they have a nice selection and my experience with customer service was excellent.

As I prepare for market gardening (haven't done my first market yet), I love to see forum and blog posts about what worked well or didn't work for others. I know it varies by region and market, but they give me great ideas. I also remember a blog post about types of tents/canopies with descriptions, which helped me a lot. And I agree with jnjfarm...I've gone through almost every page of posts on this part of the forum and the info has been invaluable.

Professionals typically have college degrees in landscape design or landscape architecture so what you may learn online (and for free) will be rudimentary at best!! And the old adage "you get what you pay for" comes into play here as well :-) The University of Minnesota used to have an excellent website: SULIS (Sustainable Urban Landscape Information Series) but that has been discontinued and that website is no longer in existence. UFL has a very abbreviated approach HERE. I personally know of no other online design websites that present the material in a thorough and systematic manner. The problem is the topic is complicated enough and so detailed that an online approach is not very practical. If you really want to learn landscape design at home, then a textbook is more likely to supply you with the information you need. And there is no shortage of those available. College level textbooks - very thorough and detailed: Landscaping Principles and Practices - Jack Ingles Residential Landscape Architecture - Booth and Hiss (my primary college text) Landscape Design: Theory and Application - Vabderzanden and Rodie DIY homeowner texts - less detailed (semi-superficial in presentation) but still useful: Landscaping for Dummies BHG New Complete Guide to Landscaping Creative Home Landscaping - Ortho Books Taylor's Master Guide to Landscaping All of these should be available to order online or can be found at places like Barnes and Noble. The college texts are not cheap but you can often find used copies or older editions for much less. There are also various online design courses you could avail yourself of. But they all cost :-) And some are much better than others.