A secured loan will have collateral (car, house, etc.)
A secured credit card is obtained by depositing a certain amount (say $500) with the lending institution and then your credit limit is that $500. You're securing the card with your own money. After 1-2 years, cards can sometimes be unsecured. If not, by that time you're ready to apply for an unsecured card separately.
and how do i go about applying for credit cards? I don't get offers in the mail, obviously, so what's the best way?