Blogger

I'm still trying to figure this thing out! I can make posts, (obviously) but when I follow someone, I get lost! I'm following my art class 3 times with 3 different accounts. Why is it when I click the follow button it makes me put in my e-mail address? Why can't it just follow?!?! I don't want to follow with Yahoo or Google, I want to follow with BLOGGER. Am I just blogger retarded, or is it just what blogger does? (Either way, I'm blogger retarded for not knowing the answer!)