What I want to do is have a php program that people can create a username and have a log in screen and they can change their information. I want to be able to confirm part of the information before it is shown and others always shown in a table of statistics. (I want to be able to check the validity of some of the fields they entered). How hard of a php program would this be to create. I am pretty new at php, so is this not a good program to start with?

This is definitely not the best task to start with. First you should understand principles of client-server architecture at least because you will have to store user's ID in some way (there are multiple choices). What do you need it for? There are dozens of ready made forums and other systems allowing user personalization, you may find them at hotscripts.com and sf.net, if you need something particular.

Yeah i agreed with MTI

What I want to do is have people play tournaments and for them to be able to report their place on their log in screen and for me to be able to manually see what they gave themselves and okay it if I see the same infomation or deny it if I dont. If I then accept it, they will be placed in a latter of standings.