With respect i'm not a financial adviser and would never comment on what you should or should'nt do ..There is loads of info out there in the form of books and stuff and in todays world there are loads of complexed trading platforms that allow you to get in much deeper than your pockets can cope with...CFD's and Spreadbetting blah blah

I'm from the old school of trading..ie i buy shares and sell shares..i work on a % of my stack and my trading day can be over @ 8.05am or last 3 mths

My only advice would be try and know your subject , never mind all that "only invest what you can afford to lose" as thats bollox.i'm ok for a few quid but i'd still jaw some fooker that owed me a pound note.

Best of luck