I would recommend you to watch on cmc and see top20 coins/tokens with highest trading volume . Also be careful and watch at history price of every coin/token . Don't invest in coins/tokens with lowest trading volume
realistic opinion, there must be a benchmark for making purchases for investment. the best ranking in CMC can be the basis for your investment. but it still needs a supportive analysis first to be sure of what we will do. do not hesitate to do what you think is the best because the best time can be lost because of too much hope and doubt.