hermes if you are new to this game it might be an idea to take a tried system that will throw up lots of winners, I.E. high strike rate.

One such system that I might suggest is to look at your formguide and circle any horse in the top three that has won it's last start.
Then eliminate any that are not ridden by one of the top three jockeys on that states premiership table.
The ones remaining are your bet!

Strike rate is very high and usually throws up quite a few winners...but papertrade first to get the gist of it before investing hard earned dollars.

(just a suggestion to get started, not a moneyback guarantee)