I've been wanting to go to a concert. Any tips or suggestions in ordering tickets?

It's been over 20 years since I've been to a concert. I've only been to a handful in my life and have never been the one that ordered tickets. Also I'd like to see Ratt. I couldn't find any info whether they are putting shows on in 2022 or not. And with Motley Crue, who would be my dream to see, I'm not sure what's going on with them either. They signed that contract years ago to never play in concerts or to tour again or something like that. Vince's band was actually the last concert I went to. That was about 22-23 years ago!