New to trading, just a few questions..

[NAFV77]

So about a few months ago i got a bit fed up of gambling, came across trading. Watched nearly all the videos on betangel's youtube channel, ended up watching 25+minute videos of people just trading on horses. I was fascinated, it looked so easy. I though a couple of £ per race would be doable, i got the trial and started keeping records. First day only had one red on the first race, -£2, overall p/l was +£33 on about 20 races with £25 stakes. I just wanted to be consistent, carried on doing this and finally i think it's time to start real trading. I have £1000 bankroll that i can risk losing, main aim is to stay consistent and make steady profits day in and out. Yesterday i was looking at trading during HT in football matches in practice mode on 0-0 games, seeing if the market went a few ticks down on over 1,5. Then betfair went down, this is when i thought to my self what happens when betfair goes down and you have a position opened? especially when trading horses within just minutes before the off?

Thanks in advance.