Is it ok for me to masturbate?

I am 13 and pretty much every other day I feel an urge to masturbate but the day after I feel like it's the most disgusting thing in the world. I'm not very far into puberty and I was wondering if this was normal. If it is normal can you give me a few tips or ideas about ways to masturbate. I already know the staircase banister one and the blanket pull