From a beginner stand point of not knowing how to do anything or where to do it, what is the best strategy to start or places to find information along with how much do you invest within the ads? Where are they shown? Do you get paid for your own ads? And how do you make them?
Hello Hsnursery, thank you for the question, my name is Emmanuel founder of FeedArmy, and I will be answering your questions.
There is actually a huge amount of things you need to take into consideration before you start.
What a good budget is depends on what you can afford, it also depends on how many products you have. For example I have seen clients ask to spend just $25 per day, when they have 10,000 products. Then with an expectation of having 10x
That is of course not possible. While I do recommend for new clients to start with a low budget between $30 to $50 products, I usually don’t submit all products in this case, just the top sellers.
Advertising on Google Shopping works as followed, a consumer clicks on your ad on Google Shopping, you pay for that click, the consumers gets directed to your product landing page, then if the consumer decides to buy your product, the money you make is from within your Shopify website. It’s not a 3rd party system, which I think you might of assumed it works.
The first thing is to ensure your website is compliant, as getting suspended is so quick, have a look at the guides and policies linked below:
https://support.google.com/google-ads/community-video/318699100
https://support.google.com/merchants/community-video/379501229
https://support.google.com/google-ads/community-guide/304792695
https://support.google.com/merchants/answer/6150127
https://support.google.com/merchants/answer/6363310/follow-the-merchant-center-guidelines
https://support.google.com/merchants/answer/7052112
https://support.google.com/merchants/answer/4752265
https://support.google.com/merchants/answer/13693865
https://support.google.com/merchants/answer/6149970
https://support.google.com/merchants/answer/9158778
https://support.google.com/merchants/answer/6150244
https://support.google.com/google-ads/community-guide/241068758
Then once your website is compliant, submit your data feed using for example the google and youtube app, or my personal favorite is multifeeds.
https://apps.shopify.com/multiple-google-shopping-feeds
Then setup your campaigns, and as you know nothing about google shopping or advertising, I recommend you use performance max. This is much easier to manage then complex setups.
And once you have done this for a month or more, start looking at articles, videos and learn from this. I am not able to share everything, because I would be writing 1000 pages long, too much 
So have a look at my videos to start with: https://www.youtube.com/@feedarmy