How can I better hunt Endermen?
There is a problem that I face, how can I kill a enderman and not lose something like 4-6 hearts?
Also, does a enderman have more protection and/or more attack if they're holding a item?
This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.
The easiest method is to build a roof with a 2 block space underneath it. He needs a 3 block space to walk, but you only need 2. You have a longer reach than the Enderman, meaning you can hit him while under the roof, but he can't hit you.
Stand under the roof, look at an Enderman, then look away to draw him in, and then hit him with the pointy end.