Copy Resource List into our docs

[jberkus]

Describe the issue

The new contributor orientation is linking off to a resource list for new contributors created by Dims 3 years ago.

While a great list, it's on Dims' Gist which means nobody else can keep it up to date. We should copy the list into our contributor documentation, and update it -- at a minimum taking out sources which don't exist anymore.

/sig contributor-experience

Related: #8199

attn: @kaslin

[AmanSarraf]

I am currently working on #8199 and would like to take this one as well.
Could you advise on where we should keep the list?
Would placing it in contributors/guide be a good idea?"

[AmanSarraf]

/assign