There are many good books on trading.
My personal favourites (on the general & common aspects of
trading) are:
1.Reminiscences of a Stock operator (Edwin Lefevre)
2.Market Wizards (Jack Schwager)
3.New Market Wizards (Jack Schwager)
4.Trade your Way to Financial Freedom (Dr Van Tharp)
5.The Disciplined Trader (Mark Douglas)
You can read reviews on all the above on amazon and i think
some of the above are availble in T2W book store at very
good prices.
Then you will want to consider which time horizon suits you
and buy books specific to that, so you plan to day trade buy
some books specific to daytrading, or if you fancy trading options
ask for some recommendations in that area..
Oh, and stay away from any books or scheme or seminar that
claims will turn you into an instant trader making £10,000+
in a week, sadly this industry is full of charlatans and con men.