Investing just in the best 10 coins marketcap as I would see it is good for the future, particularly bitcoin (in light of the fact that this is the principle). Invest shrewdly and begin trading in the event that you have seen cautiously.
That's what I always advice on newbies and even old ones. It's not like that I hate new sprouting alts so much. I just choose to stay away from them because I know that the risks are even higher. However, not everyone got the same mindset as me 
but I can't blame them tho. There are traders who really are willing to try experimental things in exchange of possibility to earn bigger. Well, good for them if they made a 3x to 4x profit but they lose more often and that's sad to know. So if you are not sure on the project you are entering then better to stick with the proven ones. As simple as that.