My suggestion to you before going to buy any altcoins or tokens you have to some research about what kind of business they will do and check the team members if you have any doubts do not invest. better is you can invest any top 20 coins like neo, torn, xlm and more hold for long term sure will get good results for your investment.
Yes, that's right, we need to check the purpose of that projects before investing our money there, if we think their doing something for long time purpose and their team are trusted and professional then, there's a big possibilities those projects will work and we can earn there if we invest.