One thing you want to do is to just write. About anything that would interest you, but it has to make sense. every time you make a new chapter start a new word file. Grammar and word phrasing is something big also to check up on or relearn.
Step2
After you make a chapter find a place online where you can self just put them online like: Fanfiction.net or fictionpress.com or protagonize.com they are great site that offer the author comment or correction that they need to make on there writing. People don't always view it as fast as you want so if you want instant feedback on it ask about it on yahoo answers
Step3
if things are going good and you have what someone would consider a lot, do research on places that would fund you getting your published. they are all over online.
Tips & Warnings
Make sure these places you find to fund you are official and are not trying to get something from you