Writers can claim one assignment at a time.
No, I mean like every day or every week.
Depends on your schedule and what you need out of Presto. Some of our writers work part time, claiming a couple of assignments each day/week, as a hobby or to supplement other writing jobs or a 9-5. Some of our writers depend on Presto for the majority of their freelance writing income. You can write as much as as little as you like!