You can’t speak English from reading it.
Circumstances create informal English instructors that the English as a
Second Language (ESL) industry calls Backpackers. Although the term was
originally coined for travelers, it can apply to volunteers, refugee hosts, any
people with no special teacher training who find themselves in a position to
assist non-native speakers improve their English but with no idea how to do
it. While coaching with no formal training sounds like a brazen, formidable
task, it isn’t. It’s a snap. And having no special education for it is a blessing
in disguise.
— Judy Thompson