If you have few resources and need a general starting part for what to teach by level, look no further!
By no means conclusive, this is a *GUIDE* to give those without resources initial direction. A textbook will usually be the best guide for giving the most consistent and comprehensive direction regarding what to teach, but this isn't always the reality! If you can get your hands on a text, it would be a great guide to follow.
Some of the best known ESL textbooks: