The following Wikimedians are willing to assist with coordinating cooperative projects online, either leading in a project or offering various support (basic questions, template creation, upload and category management, WikiProject maintenance.)
For general questions, you can join new editors and friendly hosts in the Teahouse. Teahouse is a forum to ask questions about editing Wikipedia and a space to get support from peers and experienced editors.
I have done a lot of stuff, but taking a break from off-wiki stuff, but more than willing to respond to emails and content requests :)
Historian and Literary critic by training, Wikipedia contributions have been in almost every field but computer science and hard sciences, particularly enjoy working with literary criticism, literature and odd historical phenomena on wiki. I have helped with several GLAMs in the past on getting their content up :)
Categorization, citations, Commons, content creation (articles, DYK, lists, portals, templates), research, WikiProject construction and maintenance, etc.
Architecture, current events, local history, monuments, music, National Register of Historic Places, parks, performing arts, politics, public art, science, etc.
Note: This list is US-focused. For information on global volunteers and projects see...