14...help..please

So this is gonna sound entirely stupid...but I'm 14 and I've started to feel kinda horny...and I don't want to have sex because of the risk of getting pregnant and because there's too many factors and I want to finish school! Anyway...I wanna masturbate, aha, but I don't even know where to begin..or what position to be in? Or what to use? I don't have any toys or anything so I'm curious, How do I sit? Or lay? And any common house items I can use?? Please don't laugh at me, Thanks Beautiful ladies❤💋