Go to coinmarketcap.com and read into the top 100 there. You can then choose what is of interest to you for speculative/investment purposes.
What is yours? Why we need to choose from top 100 of coinmarketcap?
In my opinion, i have 2 options, first option i will invest in top 10 of marketcap like etherium because its promissing. Second option is looking from the ico because it has potential to give us the huge profit.