A few points
1. Start small.
trade 100 share blocks and try to beat the market for "points", dont worry about profits there'll be plenty of time for them once you learn how to beat the markes constantly.
Think of a profesional pool player, he doesnt play perfectly everytime, he simply beats his oponent on points. It doesnt matter if each point is $1 or $10,000.
once you've beaten the markets on the gross for a while increase the size of the blocks [slowly] until you start making some money... Doing this can save you a fortune.
2. Read.
there's plenty of books that deal with the psichology behind daytrading, you'll find a good one right on here for free -under training at the top of this page-
called trading as a bussiness. Another book that I really njoyed reading was the Day trader bible by richard wycoff.
There's also plenty of books from different disciplines that apply to daytrading, from combinatory mathematics [logic], to sociology and economics [having a deep understantment of supply and demand can certainly help you].
Just remember that no book is going to give you a magic formula for working the markets, simply cause it doesnt exist. They'll just give you good advice on how to deal with your emotions in order to proceed in the most rational way while solving an irrational problem.
3. Have fun.
If you enjoy daytrading there's a better chance that you'll succed and make money out of it on the long run.
4. know when to call it a day.
set your self a maximun loss perday, so that you cant lose more in one day than what you usually make in one day.
