Share 'Doing Pull ups'

This is a question for anyone that has any advice on how to do a successful pull up. I NEED to be able to do pull ups as it's one of the things that my coach includes in our training. I've been training all year on building my strength and I am so close I can just taste it. My coach told me the best way to learn how to do a pull up is to do negatives or the lat pull down machine or the assisted c…