mate, I'd suggest that you have a lot more reading to do before you can start asking those kind of questions.
For your own protection, otherwise you'll run off with the first answer someone credible gives you.
If you succeed in the short term, you won't understand why and you'll blow up sooner or later; if you don't succeed by accident, you'll blow up even sooner.
My advice would be to read the FAQs and First Steps, then move on to trader_dantes Making Money thread, then over to Jayjay's divergence thread and wherever else takes your fancy later, such as Jasont's log.
At the same time, read John Carter's Mastering the Trade and Mark Douglas' Trading in the Zone.
Scalping, by the way, is not about luck. It's probably one of the hardest ways to make money in the world. Bar none.
As someone once said, trading is simple, but it ain't easy ........
there are no short-cuts I'm afraid. just months if not years of pain, tears, frustration, ecstatic highs, paralysing lows.
And it's going to cost you. I don't mean training courses and seminars, forget all that old bollox. Everything you need is available here on T2W and in those books I mentioned (I'm sure others will suggest additional titles).
I mean it's going to cost you to learn how to trade - you have to make your contribution for your education, your contribution to the markets.
Welcome and best wishes for a happy and succesful trading career.
Garry