Comment about Safety with Airdrops. Most AirDrops my be legit. But others only want to scam you.  Also half the free airdrops will never send you tokens. And the ones that do send, most of the tokens will cost more to send them to an exchange than what you can sell them for.  But some may turn out to real projects with an end product.

1. Never give the same email that you use to sign in to Exchanages.  As they could try to hack you exchange account. Best to get a junk email account and use that.

2. Never give your phone number.

Hope that helps