We have a book called Professor Grow's Book of Strains that lists the top 50 strains most commonly found in dispensaries, with the average THC content, how easy or hard it is to grow, Flowering Time, Awards won, and ailments that each strain has been used for in the past, etc.

We are in Colorado, too and will soon be offering grow classes. Check out ProfessorGrow.com for future announcements.

Hope this helps!

Professor Grow