To facilitate the installation of ROS (especially when a reliable Internet connection is not available), we created an Ubuntu image with ROS pre-installed, with which you can install both Ubuntu and ROS in one go. It is based on ros-indigo-desktop-full, with essential environment variables set up. After installation, you can still download and install any ROS packages you need.
If you want to give it a try, please follow the link here: ubuntu-ros-indigo-v1.0.rar.
Prof. O'Kane's famous book "A Gentle Introduction to ROS" has been translated into Chinese by Dr. Junhao Xiao. We have posted the preprint version of the book here with permission from Dr. Xiao. It can be freely downloaded for research or teaching purposes. However, it cannot be used for commercial purpose without permission. All rights preserved by Dr. Xiao.