Here's how to get started.

1) Get a developer account on a social network (learn how)

2) Have somewhere to host XML files (learn how)

3) Write some code (learn how)

There is also a developer application, which can make the first few steps you take in OpenSocial a whole lot easier.

For more information, check it out.

We also have some top tips, based on questions asked in previous sessions.

First of all, learn how to debug. This is especially useful if you're using external data.

Second, we've got some common tasks and best practices.