I wouldn't advise you to stay away from margin trading. Just don't invest a large sum in the beginning.
After you gain experience do whatever you want, but be careful.

NEO is a serious project. Will it be one of the top 10, it is hard to say.
Everyday we can see more and more new coins entering the market and some of them are gems too.

Ordinary people don't have that kind of money to shift market, well most of them.
Funds and large players are making big moves. Just some times many people all together can do something.
After red the green is coming

Bitcoin is using old technology and if that don't changes soon it might be a hard fall for BTC.
But at the same time devs are under the pressure because of many forks.
People don't like hiccups in transactions, don't like changes, well they something need to change.

You can wait for the price go down, but if you buy now I think it would be a good move.
Bitcoin have more potential for growth. A lot of fresh money will come to crypto.