Teenage boy questions. Need some help cause no one has talked to me?

Hi I'm a 13 yo. I have these questions. Plz take them seriously no one has tlked to me about anything so far. Plz answer all I no it looks like alot but most of it's just explaining to u. Ok well I enjoy jacking off but I think sometimes I do it wrong. I grab my fella and pull him down between my legs. Then I cross/squezze my legs together with my arm unbetween them holdin my fella behind my legs. Then with tht hand holding him I'll massage him. It feels the same way but can hurt my balls sometimes? What to do? Also how do you Jack off in bed cause idk how to clean up? Can you imitate getting a bl0w j0b, how?? Also how do u start" experimenting" with friends cause I dnt want to aping gay or like I'm trying to assult him. Also how come I don't get really any wet dreams? And if I have one at my friends what do I do cause we have to share a bed? Thx for answering!