A good way to build an first app in Python would be to go through the google app engine docs for python, they provide the ability to deploy your app and have a good api. To learn javascript, if you already know C the syntax itself is a lot like C, but there is the dom and dynamically typed variables. A good way to start might be learning some javascript basics and taking a look at jQuery: http://docs.jquery.com/Tutorials:Getting_Started_with_jQuery. Hope that helps!