Welcome! You've come to the right place!
I'm a new pool owner too. It can be overwhelming, but you can trust me when I say that the expert here have got you covered. You're going to see a lot of info coming at you really fast but the basic premise of the TFP system is that you use pure chemicals not chemical mixes (liquid bleach/chlorine instead of pucks that have stabilizer for example) and you use a premium test kit to get accurate consistent results about what's going on with your water, and once you make those two changes getting things under control is relatively easy.
Don't delay, follow the link provided above to look at test kits and get one appropriate to your pool. They may seem expensive, but you're about to save a whole bunch of time and money on expensive pool chemicals using the TFP method and that all starts with getting accurate test results.