Trouble using Android SDK

I'm new to Android Application Development. I recently got an Android phone, and so, decided to give Android App Dev a try. I'm using this link http://developer.android.com/training/index.html to learn Android App Dev.

Now for my problem. I'm having a little trouble using the Android SDK. When I use the 'android create project' command in the commandline the project is successfully created, but when I try to run the 'ant debug' command, it says "'ant' is not a recognized internal or external command". What's more, when I change directories to the root of my project, and try to execute the 'adb install' command, it says "can't find <file path> to install".

Can someone help me with this problem?