Well, first thing, welcome!!!
My advice is before putting money in, play with the platform. It takes a few days.
Then if you wish to invest, start small. If you have bitcoin buy just one STEEM and see if you can transfer it.
If you don't own any cryptocurrency its matter of couple of days.
So I love your eagerness, but advise to take it step by step.
RE: How do I add to my wallet?