I don't understand item #2. Do you mean, using a broker in your trading activities? You don't need your own broker when you trade in exchanges. Since you really don't know the people doing the trading, and that's given already, you should know when to get in and when to get out. If you are trapped in a pump and dump schemes and getting in the wrong time, you will be a bag holder of useless coins. You need to understand the coin before plunging into the unknown.