You don't need the training classes. Just don't miss any signature or initials. Review every page before you got the signing and get the signing company or title on the phone to resolve any questions or issues that my come up.
No yellow pages, and don't pay for yelp services. Just get on all FREE listing and you will be good. This is from a self taught loan signing agent with $100k in signings a year.
Being part time is not all in, but once you retire from teaching, you will have a good business & extra income already established. Take you time, don't talk to customer when reviewing the documents after the signing, be hard on yourself when you make a mistake.
Long Beach is a good area, your right between LA & OC.