A point that I haven't seen in the other comments is to make sure you fully own the Chromebook. If it's on loan from your school, or if it's provided by your work, then you may be bound by some acceptable use agreement and therefore not allowed to modify the OS.
A point that I haven't seen in the other comments is to make sure you fully own the Chromebook. If it's on loan from your school, or if it's provided by your work, then you may be bound by some acceptable use agreement and therefore not allowed to modify the OS.