welcome
well as you can see there is a lot of info around this site.
try the search option on the page and see what you come up with.
but as a common line is always stated here.
try it on paper first.
around 150 to 200 races will give you a good start.
if you are making money then go for it.
you must be sure of your system.
when losing or winning your mind must be focused .
all the best