Tips for an anal beginner

So I wanna start practicing and getting myself ready for Anal.

I love the feeling when their's a thumb in my ass and sometimes I just yearn for more.

I want to go bigger and deeper but I'm afraid of tearing anything.

I don't have a sexual partner but I do have a dildo I want to start to use.

I know plenty of lube is required but I guess I wanna know what tips would any of you give for people who want to begin with Anal?