My advice is to learn to invest and not "trade".
Required reading:
Every single shareholder letter here:
http://www.berkshirehathaway.com/letters/letters.html
Every SEC report you cna possibly stomach reading (go back 5 years at least). You'll learn about what influences have what effects on what businesses.
Every book on economics and stock market history you can possibly read.
Marty Whitman's letters are pretty good too.