I Wanna Learn

So I am a crafty creative girl & I so want to learn how to create blog pages for people. I made the one I have but it is through a site that you have to pay for & it's not really for blogs.. so I want to know what sites other people use or what software to make blogs. I also have a Macbook so it has to be compatible. So if ANYONE can assist or give me the IN I would so appreciate it :-)