chacha is this thing you could text any questions to. Their number is 242 242 (cha cha). They also have a bunch of other features.
I just texted them How can one sign up to be a cha cha guide?
here’s their answer:
Go to the website and take a look around first of all. Second, please take some time to fill out the registration forms, watch some videos about guiding and take a test, and you too can be a ChaCha Guide!!!