I come from a few years experience in Marktech, but I am also now training a partner of mine to run and maintain ads with zero to no experience. The best way to go about it is using something like Gemini guided-learning, asking it to explain the differences between Google, Meta, Tiktok, Microsoft and LinkedIn ads; deciding which ones to run for which type of audience; how to target intent, rather than keywords; explaining what retargeting is, landing page conversion optimization as well as how PMAX works; and how to optimize for it over a longer period of time. You can make a "Gem" in gemini about this, and continuously advance learning. I wouldn't throw any money at it until you understand those basics, and while I mostly run Google ads, its quite important to understand all the differences and nuances between other advertisers.