尝试在python 3.6上安装pygame和pip时遇到问题

I'm new to programming and I'm studying python. I have to install pygame and pip in order to continue the book I'm studying from but I can't seem to find an easy way to do it. I've tried to upgrade pip but I dont know exactly how to do it. I already tried by using the prompter but it says that it cant recognize it as a internal or external command. I have recently downloaded the python 3.6.5 version and I still have the python 3.5 version installed. Is there an easy way to do it? I'm new to programming and I'm studying python.