calling all php and mysql guru's

[CP,]

Ive been searching for a day now and im going to cry soon.

I am to make a project a dummy website e-commerce website. So security and all the other things are not so important, just need things to be bland and plain but most importantly to work!

Ive got a mysql db set up, and my users can log in and log out thats working.

Now here is the problem. Once that particular user logs in i want him/her to be able to view the details stored on the db about them, i.e. their firstname, surname, email etc

Ive been trying so many methods but none seem to work or some are giving me blank results. If somebody can help me with this, it would be much appreciated.