I don't know of any specific ones. I recomend checking out http://phpfreaks.com if your just starting out. That should help get you started on them both. Also, the actual website, http://mysql.com can be a lot of help.
PhpMyAdmin is just something you have to get used to as you go along. You could read the help docs, I think they are on http://phpmyadmin.com, to help a little.
If you have any questions.. you can PM me, I'll help you the best I can.