Can i buy stuff with a check online
You cannot buy stuff with a check online. You can only make online transactions using a debit or credit card or pay from other paying means like Payoneer, Paypal, and Moneybookers.
Yeah you have to put the #'s at the bottom but not all the websites do that
Rarely, but you can. You have to know the routing number and the account number. Both of those are on the bottom of the checks.