Here are tasks that can be done as well as some tips....
You can help improve the articles listed below! This list updates frequently, so check back here for more tasks to try. (See Wikipedia:Maintenance or the Task Center for further information.)
AWB is a semi-automatic Wikipedia editor. It works on lists (batches) of pages, automatically edits the first page the way you specify, and then takes you to the next page once you approve the changes to the current page. It has powerful features. It can even run an external script, regex (regular expression) on each page it processes.
In order to use AWB, you must either be an experienced editor with over 500 edits, or a Wikipedia administrator.
AWB is very useful and helps perform repetitive WikiGnome tasks very quickly, like stubs sorting, substituting templates, and searching/replacing.
For on-the-fly general discussion and support requests for AWB, try the AWB IRC channel: #AutoWikiBrowserconnect
The best place to look depends on what kind of help you need:
If you're doing research and need to know where to find a particular piece of information, or just want the answer to a trivia question, try Wikipedia:Reference desk.
Visit the Teahouse if you are a new editor looking for interactive help. Ask questions about using Wikipedia and volunteers will respond as soon as possible.
Ask about technical issues at Wikipedia:Village pump, which is a page where folks especially knowledgeable about Wikipedia hang out. The village pump is a metaphor for a place where lots of people gather to discuss interesting topics.