I'll just repeat what you've heard already - but I agree with what was said about Google's help - don't listen to them. Most of the time, in like 99. 9% of all the cases, they are wrong. And definitely start tracking conversions. You will get all kinds of valuable info from there and you will know whether you are doing a good job or not depending on your desired outcome. Plus, you apart from tracking your macro conversions (eg. someone fills a form or calls or clicks "buy" if someone has na e-commerce store) you will be able to track some micro conversions - things like whether someone started filling in the form but didn't or whether someone watched a video you placed on your website or how much of your content he read - then, you could say that these people although they did not convert were in a way interested in your service and you can retargret them with your ads. If you are looking for a good course I can recommend Isaak Rudansky on Udemy. He is amazing.