If you ever think a page or image should be deleted, please list it at the votes for deletion page. There is also a votes for undeletion page if you want to retrieve something that you think should not have been deleted.
If you're still entirely confused, or would like to get a better grasp of your wikipedia skills, and you have an IRC client (or don't mind getting one), check out the Bootcamp. It's not what it sounds like, but it is fun and can help you with your editing skills.
If you're bored and want to find something to do, try the Random page button in the sidebar, or check out the Open Task message in the Community Portal.
Notification: changes to "Mark my edits as minor by default" preference
Hello there. This is an automated message to tell you about the gradual phasing out of the preference entitled "Mark all edits minor by default", which you currently have enabled.
On 13 March 2011, this preference was hidden from the user preferences screen as part of efforts to prevent its accidental misuse (consensus discussion). This had the effect of locking users in to their existing preference, which, in your case, was true. To complete the process, your preference will automatically be changed to false in the next few days. This does not require any intervention on your part and you will still be able to manually mark your edits as being 'minor'. The only thing that's changed is that you will no longer be able to have them marked as minor by default. For more information on what a minor edit is, see WP:MINOR or feel to get in touch.