What are /r/linux_mentor's favorite Products & Services?

From 3.5 billion Reddit comments

I've been taking this course and finding it helpful. It's free, the instructor is easy to follow, and the mini projects are sometimes fun.

https://www.udacity.com/course/programming-foundations-with-python--ud036

Have you tried enabling the EPEL repo?

http://www.rackspace.com/knowledge_center/article/install-epel-and-additional-repositories-on-centos-and-red-hat

http://www.thegeekstuff.com/2012/06/enable-epel-repository/

https://www.digitalocean.com/community/tutorials/how-to-create-a-ssl-certificate-on-apache-for-debian-7 https://www.digitalocean.com/community/tutorials/how-to-create-a-ssl-certificate-on-apache-for-ubuntu-12-04

Try first with a self signed cert then try with a "real" cert you can get a valid cert from startssl.com

Best is to just try something like this and struggle as much as possible until you figure it out: https://www.digitalocean.com/community/tutorials/how-to-install-and-configure-a-basic-ldap-server-on-an-ubuntu-12-04-vps

Online courses: RHCSA

Books....hmmm. UNIX and Linux System Administration Handbook (5th Edition)

But honestly, I could write up a crash course for selinux and iptables. I should host a blog somewhere.

EDIT: Forgot the most important parts, /r/selinux and /r/linuxadmin !