1. Are you capable of performing a pull-up? 
2. How many pull-ups can you do? 
3. Are you looking to improve your pull-up performance? 
4. Are you lost on how to go about mastering a pull-up? 

Improving your pull-up performance is probably one of the most challenging feats of strength you can do when it comes to bodyweight training. Pulling your bodyweight from a dead hanging position from a bar with your arms fully extended requires nothing more than brute strength. You can’t hide from it, you can’t cheat it, and you can’t beat it until you just simply master it.