jibtech wrote: » Easiest to most difficult: 1. Linux Essentials 2. Linux+ / LPIC-1 3. LPIC-2 The Linux Essentials is less difficult than the first half of the Linux+/LPIC-1 cert (LXO-103). Personally, I would use the LXO-103 materials to study. Linux Academy seems to be the most popular. I had good luck with the uCertify material, and LabSim is also a great way to practice.@boxerboy1168, LPIC-2 is definitely harder than all of the above. It assumes you have at least LPIC-1 knowledge and dives deeper across everything.