I've learnt a lot by being here, as there are many truly wonderful people in CS that are willing to share if you ask nicely, and intelligently. On my part, the most I can do is try to help newbies who's questions may sometimes go unanswered as I am very much a newbie digitalman myself. You won't believe how stupid I can be at times. I can't believe it myself! LOL!
Nope. I only learnt mostly about terms/slangs used around here. WTB BNP, Dark/White Side, White lens etc.
Also on the technicalities (pros/cons) of each individual lenses and good place to find out costs and good stores.
It's not a really good place to learn about composition...and most talks are mostly about switching camps, Nikonians complaining about the lack of full sensor, lousy ISO...threats about switching to canon side if nikon disappoints again...false rumors of D200 replacements...blah blah.