Membership area?

Can anyone tell me how can I make a membership area on my site.... I will organize my site using groups, not pages on wordpress and I want to make a specific page available only for member. And the members must pay in order to have an account. Can anyone tell me how can I do that? Have a good day, cheers!

You can use a plugin called s2member

There are several membership plugins that you could use for the same, run a quick search on Google.