LPIC

Varios links a los cursos oficiales LPIC
https://www.lpi.org/certification/get-certified-lpi/lpic-1-linux-server-professional

http://ibriandump.com/?s=lpi+10

http://www.lpi-spain.es/index.php/material-de-estudio

https://www.lpi.org/study-resources/lpic-1-101-exam-objectives/