>>SQL is usually faster and also safer than normal VFP code. And if you later plan to move your data to a real SQL server, most of the work is already done.
>hmmm..where can i get SQL certified

It won't get you certified, but you may find the e-book I wrote about VFP's SQL language helpful.

http://www.hentzenwerke.com/catalog/tamingvfpsql.htm

It covers all the various SQL commands in VFP and gives lots of examples.

Tamar