DBI _is_ the driver. If you have LinkSQL, then check out the resource FAQ on using DBSQL.pm to access the database.

There is a new mSQL/MySQL book out that goes over all the specifics of MySQL. Once you do that, you can use any SQL book to develop queries from that.

The book is _really_ worth it.

If you are trying to solve a specific problem, it helps to have more specific information on what you are trying to do in order to give an answer.