A good guide to online rock climbing?

I have recently been taught (by a professional and in the field) to do outdoor top roping. I learned all of the appropriate knots and technique for setting up anchors in the outdoor environment. but it was alot of informartion all at once. I am looking for a guide on all the little details and technicalities so that I may reference to it when setting up my own climbs by myself. Otherwise, I dont think I have it memorized enough yet to do it safetly, but with little reminders of which knots go where, etc., What I need is a good guide of referrence book that I can print out from online, or purchase if it isnt too expensive. Any suggestions?