I've been masturbating all my life, since the age of two or whenever the earliest memory exists. My favorite way has always been to lay face down and rythmically squeeze my butt cheeks together and release. Humping I believe you call it. Occasionally I will use the hand when I can't lay down. I have found that I can have the best experiences if I use a non-lubricated condom. It keeps my penis wet and slippery and also catches all the cum when I eventually reach climax.
I learned this around the age of 13 when I found a pack of rubbers in my neighbor's truck glove compartment. He was an adult and I worked for him in the summer when school was out. I took one home and put it on in the bathroom. I never saw a condom before that and it made me really horny. My mind was speeding with all the thoughts about what my neighbor did with them.
My friends and I talked about rubbers when I was younger and I was curious to actually look at one. After I had it on I began to fondle myself and got really big and hard. I always liked the mail order catalogues my Mom had around and looked at the girls underwear pictures while I was getting horny. I was extremely curious about what girls my age looked like naked. I would then lay down with my hard on against my belly and the floor and masturbate by humping. The rubber becomes wet inside from the pre cum and allows my penis to slide around anyway I like without becomming irritated. Great way to spend a few hours. Hope you try this method. It's great.