As Linux is developed by members of the Internet community, the best place to get help is probably by posting a message to any of the following newsgroups:
For non Linux-specific topics, there are a variety of groups in the comp.* heirarchy that may suit your needs. Here are just a few of them:
There are also several resources on the Web that may be useful. Do a web search for "Linux", or visit any of the following:
There are a myriad of mailing lists that may prove helpful in providing answers to your questions as well. These can usually be found through a simple web search (for example, searching for ``linux raid mailing list'' might help you find mailing lists devoted to RAID issues under Linux). Here are some I recommend; to subscribe to any of these lists, simply send an e-mail message to the subscription address listed with the word "subscribe" in the body of your message:
Description of available Red Hat lists: http://www.redhat.com/
Description of available GNOME lists: http://www.gnome.org/mailing-lists/index.shtml
Description of available KDE lists: http://www.kde.org/contact.html
Subscription address: linux-scsi-request@vger.rutgers.edu
Subscription address: linux-raid-request@vger.rutgers.edu
Finally, you may be interested in checking out the following two sites, both of which are my personal "daily must read" favorites. SlashDot covers the latest technology news in general with a definite Linux slant, while FreshMeat provides an up-to-date listing of Open Source applications announcements.