Besides US and China citizens who else is banned from purchasing tokens legally?
Can Canadian people purchase tokens?
can Russian people purchase tokens?
can Singapore people purchase tokens?

LEGALLY

By tokens, I mean ICOS, mostly ERC20?

There are lots of altcoins(well, ICOs) Can anyone suggest some altcoins to buy?
I searched some on ICO listing cites, but it seems a lot of them are paid to be rated high. Some coins have only 100+ members on Telegram...
I know that the price will go up and down but how to find some altcoins that is really doing something revolutionary and worth to invest?

Haha, that's what salespeople do lol sounds stupid but most of sales did succeed this way

I randomly bumped into this website: cryptoinfluence.io
They give these crypto YouTubers a score to indicate their "credibility?" I guess
It also has a scammer list

but

In my opinion, these people are just regular people expressing their personal opinions, there should not be any credibility nor should they have a lot of influence.

Well anyhow, just find that interesting to see what's your opinion on if you trust these crypto "influencers" and if you do, what are some good influencers that you follow, would like to see what they have to say.