Your environment variables are not set at all, as specific in the statup guide in the environment variable section:
If that was correct, when you type “set”, you would see ANDROID_HOME, JAVA_HOME, etc. Since those aren’t showing up in your env variable list, you have not set them properly.
Reading your initial message, you say you are not able to do what the doc says to do, why is that?
Maybe you have some lack of administrator access on your machine? Maybe you need to run the TADP installer as admin? I’m not really sure why TADP would fail.
Josh