Where can I find people who are speaking my language?
Many people in Second Life are able to contribute in English. However, in case you're not a native English speaker, you might want to look for people who are able to speak your native language. It is often a good catch to just use the Search function in your toolbar and search for the name of your country or a big city. Search either in places or in groups.
In case you're looking for language specific help, you can look at this wiki category to find a list with volunteers. The localized subpages of this page also offer more detailed info for your specific language. In case there is none for your language so far, feel free to create one =)