Once you decided to invest in Bitcoin or Altcoin, you have to determine what kind of money making strategy you are into? Do you only choose one to invest or put the bet on both?
I think the best thing to do before investing is to think wisely. Think wisely if that thing is what you want to do and you are willing to risk your money just to make that investment successful. If that will become successful then for sure you will have a big profit and it is worth risking for. Follow what you think is the best for yourself and be passionate of what you want to do.