Since the ABF has largely stepped aside, the State Associations have taken a leading role in supporting bridge teachers. Their websites have useful links plus local content. Some states have a teaching co-ordinator.

Bridge Victoria is the recently formed body that overseas bridge in the state, including teaching.
They maintain a list of clubs that run beginner classes, as well as a list of clubs with supervised sessions. These are useful for people who happen upon the BV website, plus clubs who don’t run lessons.
The Teacher’s Hub has a link to the ABF list of Accredited Teachers, plus their list of “Honorary” Teachers, including emails for many of them. BV also run their own Accreditation Process.
(The ABTA does not plan to get into the Accreditation business)
There is also a Victorian Bridge Teachers’ Network

The BridgeNSW website has a “Play and Learn” centre. Clubs can advertise their courses, There are links to self-guided sites like Tricky Bridge and LearnBridge. (Both are apps for phones and tablets.)
Plus links to videos.
Self-guided practice links to bridgetraining.com.