Audacity shortcuts
Audacity is a really great piece of free audio editing software, also great if you need something for translation/transcriptions, where you need to, say, repeat...
Category: Audio / Video
The right YouTube video size and resolution
The ideal dimensions for a standard YouTube video are 1080p, or 1920 x 1080. Lots more information here.
Download and reformat video from any website
To download, use the Chrome extension Flash Video Downloader. To reformat any video (to a smaller size, to mp4 format etc) you can use the free Handbrake.