See https://github.com/szabgab/screencasts

This task involves translating the English transcription of the video in the link above. You'll need to keep the rest of the format as it is in the English transcription so the subtitles appear at the correct time.

The github link points to the repository where the translations and transcriptions are kept. That repo will need to be forked, then you can make your changes and send a pull request. If you have any questions about that pop into the IRC channel (http://bit.ly/u5t43I) and someone will help you.