If you want to trade on 'safer' platform, then I suggest you trade on forex brokers. Their liquidity is exceptional and there are a lot of brokers on the market.
I've decided to do that by myself, trying to earn $10-$30 a day with margin. It's hard but I think it's good to get extra money in your spare time. I'll probably focus on this too if my other job is not working quite well.
First of all, develop the ability to analyze the situation soberly. For trading, spontaneous, impulsive decisions, dictated by panic or greed, and based on the principle do it all are very harmful. First of all, rely on your experience and double-check the incoming information. Always start with those sums of money, which will never give you great losses in a case, if you fail.