You can check out the current collection here:
I made it mostly for my own sake so rather than having bookmarks or using Evernote to keep track of the things I find, I instead have a database on my own website. But then I thought other people may find it useful as well so I decided to polish it some and publish it. This ended up being a massive undertaking, comparable to writing a dozen articles, so I hope someone else also finds some use in it.
My favorite part about it is that I’ve gotten access to many of the old official Unity tutorials and projects that are now unsupported and are no longer hosted on the Unity asset store or the Unity website. I’ve uploaded a few of them already, but I’ll add even more as time goes on. Most of the tutorials probably aren’t that interesting anymore seeing as they were made for Unity 2, but I think the assets in some of them are great. My favorite is the 3D platformer tutorial. You can make so many different games and prototypes with the assets in that project.
Just remember that those old projects are no longer supported so please don’t bother Unity if you have problems with them. Feel free to bother me however, I don’t mind.
I’m going to continuously add to the collection and if it becomes big and unwieldy I’ll consider adding sorting and searching to it as well. Maybe some tags etc. as well. I already have a backlog of things I want to add. 
And if you have resources of your own or find some you feel like I should add to the collection don’t hesitate to contact me.