The linux ROS machine you can download here has been configured in Oracle Virtualbox as follows:
Ubuntu 64 bit 20.04.6 LTS
ROS Noetic Desktop Full
Python3 ROS packages
Turtlebot3 packages
Turtlebot3 gazebo simulation packages
Misc. preloaded additional models for Gazebo
You will need to download and save on your laptop. The machine file is 6.4GB in size. Download it on a wired connection or it will take a long time (it will still take a while).
If you do not have oracle Virtualbox installed, install it now https://www.virtualbox.org/wiki/Downloads
Start virtual box and under the menu item File->Import appliance select the FRCVROS.ova file.
Once the machine is imported, you can start it by starting Virtualbox and clicking on the name of the machine FRCVROS.