Welcome to Namepros, Dennis.
There was a .info promo last month that made your first 25 .info free for a year at variuos registrars (not all of them offered the free promo). I don't know if that promo is still on.
After a year, you have the option of renewing your domain by paying for renewal fees. Right now fees are between $5 to $10 per year depending on the extension (.com, .info, .net, .us, .biz, .org, etc.), and the registrar (they can set their own rates). Failure to pay for renewal means that the domain will be released back in the available pool for anyone to register.
- Apollo