Code in tutorial section has been taken from http://wiki.ros.org/ Compilation parameters have been taken from http://jbohren.com/articles/roscpp-hello-world/ and http://answers.ros.org/

/* TO COMPILE g++ hello_world_node.cpp -o hello_world_node -I/opt/ros/indigo/include -L/opt/ros/indigo/lib -Wl,-rpath,/opt/ros/indigo/lib -lroscpp -lrosconsole -lrostime -lroscpp_serialization

TO EXECUTE source /opt/ros/indigo/setup.sh roscore ./hello_world_node */

/*

hello_world_node.cpp The source file(s) to compile
-o hello_world_node The name of the output file (the executable, in this case)
-I/opt/ros/indigo/include An instruction to look for C++ header files in /opt/ros/indigo/include
-L/opt/ros/indigo/lib An instruction to look for static libraries in /opt/ros/indigo/lib
-Wl,-rpath,/opt/ros/indigo/lib An instruction to look for shared libraries in /opt/ros/indigo/lib
-lroscpp Link against the library libroscpp.so (ROS C++ bindings)
-lrosconsole Link against the library librosconsole.so (ROS distributed logging)
-lrostime Link against the library librostime.so (ROS time measurement)

*/

Tutorials

http://answers.ros.org/question/223599/how-to-subscribe-to-a-topic-while-publishing-to-another/

http://answers.ros.org/question/223579/not-able-to-spawn-basic-shapes-in-rviz/

https://github.com/ros/cheatsheet

http://wiki.ros.org/RecommendedRepositoryUsage/CommonGitHubOrganizations