UCF has a really nice one hour intro video tutorial[1] on using the Bloomberg Terminal. It really is crazy powerful, but has a high learning curve. It is however the defacto standard for professional traders and finance. I'd often thought would it be feasible to come out with a competing product that is iPad native and offered as SaaS ($99/mo per user) with no special hardware, annual contracts, and high costs.
[1] https://www.youtube.com/watch?v=LE8HiHZcgEE