If you're totally lost, don't forget to have a look at the examples that come with MMF and search for some good beginner tutorials on step by step making types of games. That will really help you get a grounding for MMF's interface and how the coding works.
I could help too if you're confused. But remember, before you start with your platformer, first make something a little simpler like pong. My Email is JuiceOfOrange@gmail.com. But just stay with this community because everyone here would love to help.