You would be editing our standard articles, which are about 400 words long and are $1 per review. The editing is mostly proofreading, but occasionally it requires some light reorganization or substantive editing. Our at-home team currently averages 4 minutes a review, which comes to about 15 reviews per hour. There is no minimum requirement for the number of edits you need to complete, nor is there a set schedule associated with our work, so you would be welcome to edit any day, any time you want, and do as much or as little as you want.
We do have a quality assessment system in place for reviews, and our editors are required to maintain an average of 4 out of 5, although there will be a grace period when you first begin editing. We don't officially train our at-home editing team, but we do have several resources we share with applicants who pass the test to help them understand our system/rubric.