https://index.ros.org/doc/ros2/
https://answers.ros.org/questions/
https://www.youtube.com/watch?v=mDwZ21Zia8s
https://www.youtube.com/watch?v=QcjUo7kcKxo
https://www.youtube.com/watch?v=cBmIiR3jRvE&t=8s
https://www.youtube.com/watch?v=npQMzH3j_d8
https://github.com/kiloreux/awesome-robotics
https://github.com/fkromer/awesome-ros2
https://github.com/fkromer/awesome-gazebo
https://github.com/ahundt/awesome-robotics
https://github.com/jslee02/awesome-robotics-libraries
https://rsl.ethz.ch/education-students/lectures/ros.html
https://www.theconstructsim.com/robotigniteacademy_learnros/ros-courses-library/ros2-basics-course/