First time working for a startup. Equity, RevShare, ProfShare. What should I ask for. I will not promote.

I'm currently in negotiations with a startup for my total compensation package. This is my first time working for a startup, so I'm completely green to this experience.Without giving up too much detail, the company will utilize a B2B model and already has MOUs with established multibillion dollar companies to sell product too. I'm wanting to know in addition to my salary, what else should I ask for? Equity, revenue sharing, profit sharing, any combination of these? What are the pros/cons of each?