Here's my advice: First, don't try to figure this stuff out initially via Mountain Project. It will likely just confuse you at this point (similar to the above person saying "you don't know what you don't know). Second, pick up the John Long anchors book. Read it. Multiple times. This will give you a great base and will likely answer 90% of your questions. Third, after reading John Long's book, ask additional questions here that either supplement the Long book or go beyond its scope. Note: I'm not trying to discourage you from posting these questions, but I think the above approach will be far more useful (and safe).