Redesign of video collections/bookmarks/tags

I found a lot of useful design tutorials in Vimeo and Youtube. Frequently I go back to my collections to regain the technics that I learnt previously but forgot recently. Unfortunately both Vimeo and Youtube don't provide a good user experience for it.

I would love to have a clean summary of my collections, a way to invite friends to co-edit each collection, and a way to share my collections to other people that look for similar tutorials.