How long did it take between submitting the first online test (10 questions on English grammar, etc.) and the invitation to take the following tests (more specific editing tests)? I received their email with my score on the first test (100% correct answers), but it's been a couple of days and I haven't received any information about the following tests. Thanks in advance!

Did it take long to get the offer after they reviewed your edited passage?

No, it didn't take long to get the offer. There was a delay between my accepting the offer and them getting me started to actually start editing. Apparently because I was hired at the same time as a bunch of other people, I had to wait for them all to get their paperwork in order before I could start.