Chapter 1.
The Job of a Beta
This part is simple.
As a beta, your job is to help with grammatical errors, characterization, moving the plot along, and motivating your writer.
Okay, maybe a few other things also, depending on your writer.
As a Beta, you are your writer's best friend and worst critic.
They will send you many, many, many drafts of their chapters as they try to figure out their story.
You will be the motivation that, hopefully, keeps their story alive until the last chapter.
You will be their second, or third, or fourth, set of eyes.
If you feel that you are out of your league, tell them that you need a second beta to help out.
Beta's stick together.
Or you should.
Let's move along.