To help such newcomers, Ubuntu has put together a community team that ensures new users are handled with care. The New Users Network, or NUN, is a group of experienced Ubuntu enthusiasts who help new Ubuntu users come to grips with the operating system.
Read about it at Linux.com
In addition to reactive answers to users' questions, the NUN mentors are taking proactive steps in the form of guided tutorials, biweekly on the first and third weekend of each month, in the #ubuntu-classroom channel, for users of different expertise levels, from beginner to advanced. Eleven classes have been announced so far, with topics that help newbies work smarter by introducing topics such as the command-line interface and compiling and installing packages, as well as those that help experienced users understand things like GPG encryption, the Linux kernel, and system administration.