After you install and activate your plugin with your e-mail address, just add as many Money Machines as you want (no need to use all of them on the same site, you can always start small and test).
Please watch this intro video from Ankur on how to get started:
If you have doubts about how a method works, the best way is to just test it! You are not going to break anything, so just add it, play with the settings to your liking, and if you decide it’s not for you, just remove it from your site.
You can check all Money Machines here: https://wpmoneymachine.com/support/section/monetization-methods/.
For the Pro only methods, they can be found here: https://wpmoneymachine.com/support/section/pro-monetization-methods/