Hi Chisa, There is an exercise called jelqing, you need to google pegym, and on there look for jelqing for beginners, now you keep to what they say, never try and rush our push the program, if you do and
go to fast you will end up with ED, your warned, but there are a lot of guys who have gained, all you need to do is look at the photos, surggest you start you own photo album, so you can compare as you grow.