Instant download. Yours to keep.
No. The method is writing out how you would explain a task to somebody on their first day. If you can do that, you can do this.
No. The build in chapter three uses free tiers of tools you can sign up for in two minutes, and there is nothing to cancel later.
About twenty minutes for the build in chapter three, assuming you have the task in mind before you start.
No, and the guide is direct about that. Anything carrying a signature or a relationship stays with you. These handle the repeating work underneath.
Start with a job outside work — that is what chapter one recommends anyway, for exactly this reason.