Both expert marketers and newbies. It shows newbies how to start and get fast results in affiliate marketing space and teach experts new tech stuff. Plus, it saves you thousands of $$$.
You get results almost instantly. You put money in, test, scale and pull money out. It's that simple. It's just a matter of testing various different campaigns and find a winner.
Minimum: tracking software, domain (from $1), and VPS server (from $5). You will find details inside the course. You also need some budget to invest in your campaigns.
This is very individual. Generally, the more dedicated to the course you are and the more time and money you spend testing campaign, the sooner you will see results.
You can start at $50, but I recommend having at least $250 to get your feet wet, understand all the mechanics, and learn how to run mobile campaigns properly. However, more is better.