RE: If you don't use a peep sight...
Of course, you know there are certain knotheads (like me) that don't use any sights at all on their hunting bows. Sights are for target shooting, in my estimation, and I'm even getting back into barebow target shooting. My 50 year old eyes don't pick up my sight pins very good any more, any how. <img src=icon_smile_wink.gif border=0 align=middle>
If you've got the time to devote to practicing, you might consider barebow.
Now, for your second question. Read everything you can get your hands on. Use what you think will work for you and forget the rest. If you know a grizzled veteran bowhunter to go out with, that's a major advantage. Bottom line though, experience is the best teacher. Get out and hunt.