The most important thing when trading is to understand the trend that is happening, and making several sites for reference and making decisions is the best thing, now I use coinmarketcap as a reference because there is already a selection of the most profitable coins daily, weekly and monthly, and this simple technique makes I can earn big.
Just going behind trend is never been good idea because sometimes we have fake trends which are started by whales for their own sake can hurt any newbie most useful and better use case is just done some research and read all about project because it's first and basic thing for anyone after this you check team and their product because if you are going to invest then surely you have all information about this it's very important for you.
Read analysis and have as much you can from social channels and white paper or all available resources because you are going for your big decision which need some good work from you.