I haven’t yet identified a DivorceInfo Network Lawyer for Tennessee.
I’d recommend that you start with the comprehensive web site called About Divorce in Tennessee, from Larry Rice in the Memphis area. Here’s a site called Memphis Divorce from the Crone & Mason firm in Memphis. There’s also some information about divorce on the site provided by Jennifer Lynn Thompson, Justice for Y’all.
If you don’t need a lawyer and just want to file a simple divorce, you can order the forms and do it yourself, or you can get DocuPro to do it for you.
The Nashville Bar Association has a pamphlet on Divorce In Tennessee.