What worked for me: begin with Coinbase as exchange. After your self-confidence is higher, you can start trading with Gdax, Coinbase's brother; simple to use and no fees at all
Hmmm I think it is not just about self confidence because you don't have speak in front of many people as you invest in a cryptocurrency.
Also the thing is you have to be prepared. Take the risk
Be smart enough
Do researches and always read
Make sure to think before making any decision
In short be mature enough.