I use raw milk also and I don’t pasteurize it. Keep in mind that 60 day rule though. If you aren’t aging for 60 days you should pasteurize it. Home pasteurized milk makes a better curd than the store bought stuff. Of course store bought stuff is pasteurized and homogenized and you don’t know what temperature they pasteurized it at.
I have tried mozzarella a few times and have never made a good one. It’s easier and tastes better if I buy it. That 30 minute one that everybody always tries, has no culture in it, and no flavor. I am not a fan of that one.
Buy a book, make sure you read the procedure sections a couple of times, and get started. I have 4 books, and I love each one of them. There is book section somewhere on the forum.
Keep a good log, for reference when tasting the cheese. If something is wrong, or you want to change some characteristic the log is a good place to start. Some of it turns out to be trial and error, or the famous “I can’t believe I did that” but it’s always fun and interesting to see what you have in the end.