It is the first time that I use heroku. But I encountered some problems installing it. Luckily, I resolved the problem.(In windows 8)

Step 1: Sign up for an account

Step2: Download the heroku toolbelt

Step3: Open your command line tool and type in "heroku login"

　　Oops, errors pop up.

　　Sorry, I forget the error messages :(

　　But one thing can be sure: I could not login.

　　So I began to wonder whether I had installed the heroku in a correct way...

      I typed "heroku help" in the command line and saw many options.

      Then I tried "heroku regions".

      It asked me to sign in. And I signed in successfully(But I could not sign in when I typed "heroku login")

      It asked me whether to generate a public key. choose yes of course.

      And I thought I had fixed the problem and typed "heroku login"

      Wow, I succeeded signing in!

Step4: git clone a project from remote server. (I used heroku not because I wanted to create a new app, but because I had to modify an existing app)

　　Error happened again.

      It says that I have no permission to that app. (How is it possible!)

　　Then, I tried "heroku keys:add" to upload the generated public key...

　　But it is not done.

      Next, I copied the .ssh directory from C:/User/XXX/ to C:/Program files/Git/ 

　　And Type the "git clone" again.

      Then it started to download...

I hope this may help some people.