How to check if a company is legit?

How do I check if a company is real or they just want to rob my interest?

Educate yourself about the company - look into the business, talk to existing customers.

Do you mean an online company? What kind of company are you talking about?

if things are spelled wrong obviously not look at the boring 'terms of service' and read 'about us' you could call the #s under contact us and check all their contacts and make sure they are all professionals