I think you are referring to the BOTS forum. I did looked a little in there some time ago, and it's certainly not made by brokers. But that does not mean that there are not a lot of scammers there selling various signals/... I find their articles pretty shallow, but then again, they are for beginners.
Beyond two weeks that you need to understand how profit/loss is computed and familiarizing yourself with the platform, your wasting your time playing demo. You should know that playing poker for free is much different than playing for money.
A child needs to feel fire and electricity to fear them. No amount of lecturing will do. The same is with trading, you need a few good loses until you learn not to be too greedy. On the other hand, you did say you played poker for money, so maybe you already learned some of the money-management lessons (going on tilt and all that).
Forex is MUCH more difficult than poker. At poker, you can end up at an "easy" table. No such thing in forex, since practically all the tables (currencies) are global. You'll be playing against the champions (banks, hedge funds, algorithms) in each one of them. WOULD YOU GO IN WITH YOUR MONEY AGAINST THE WSOP FINAL TABLE? Because that is exactly what you'll be doing when trading with money (BO or regular forex).
I think that you are totally unrealistic if you want some extra income from an $500 account, but then again, you might be that born speculator.
The most likely scenario is this: you will lose those $500 once or twice, and if you stick to this for a couple of years, you might win it back and then some. It's certainly possible, but you need to work hard. Just like another job. 90% of traders are losers -
AMF Publishes Four-Year FX Study, 89% of Investors Experiencing Losses
WATCH THESE TWO VIDEOS which give you a taste of trading. Notice the mom who got 500% on demo in 9 months, but then losing 30% of her account when going in with real money (second video). Like I said, trading for real is a whole different game (psychologically).