Facebook don't really explain how to restrict some of your information to particular friends, but it's not hard to do with the new privacy settings.
1. First go to Friends, and if it doesn't already exist, make a Friends List called Limited Profile. This will be used to limit what some people can see. (You can use multiple lists to have different permissions.)
2. Put the appropriate people into it. (When confirming friends it gives you that option, too).
3. Then go into your Settings / Privacy Settings / Profile. You can customise who you want to see what, and exclude the Limited Profile people from seeing particular information — or have particular people see/not see whatever you want.