i think you can use different exchange for trading, it is not such a difficult job.
trading is not a difficult job on this internet because all you do is to follow the flow of the altcoins to do some trades, You are going to buy some cheap coins or ico investment your bitcoin into icos then wait till the icos period and then sell them in the high price

Yes. It is a good business. Trading brings more profit. This totally depends on the time and the experience. I always love to approach the experienced in the same field. Their suggestions would be more valued. Success comes out of patience, hard & smart work and experience. Of course money matters. Money plays a vital role.