Further reading

• This website will give you all of the necessary information about the current CompTIA Linux+ certification: https://www.comptia.org/
• This website will give you details relating to LPI exams, specifically the LPIC-1 that you earn by passing both CompTIA Linux+ exams: http://www.lpi.org/
• This last website gives you details about the various Linux kernels available: https://www.kernel.org/