There are many available online resources for finding help with Kubuntu. Besides the following, a simple Google™ search will also yield a decent amount of help.
The Ubuntu Documentation Website contains HTML and PDF versions of this guide, and other guides produced by the Ubuntu Documentation Team for Ubuntu and Ubuntu Server.
Ubuntu Community Documentation Wiki - this contains many other community maintained guides
Kubuntu and Ubuntu Community Forums - here you can ask questions on a forum and receive answers from the forum community.
Kubuntu User's Mailing List - here you can ask questions by email, and receive answers from the mailing list community.
IRC chat: irc.ubuntu.com channel #kubuntu - chat in realtime with the Kubuntu community.
Kubuntu Homepage - Get the latest news about Kubuntu.
For more information, visit the How to Get Help wiki page.