Seat time is Number One! However, as someone "self taught" the key ingredients to me were learning from others that hunt, reading books (Eberhart), watching videos (all of them although Eberhart is at the top), reading forums, and magazines/TV shows are necessary to shorten the learning curve. No particular order to these things. Learn what you can from each, and then the hard part is having the ability to implement what you have learned into your seat time. I think the hardest part to learn is how to get into and out of stands in order to have the seat time. This is one of those skills which might never be mastered. You just never seem to know when the deer are there or where they are. Of course there are times when they are more predictable, but during the gun seasons or in heavier pressured area I think it is almost a guess sometimes. This is where seat time is critical.