If you are an junior Linux/Unix sysadmin looking to advance your technical skills, here is a list of talks, workshops, and tutorials that you should attend at Usenix LISA 2013.
These are skill-building, technical presentations. I only made exceptions for a few "soft topics" talks only if they are for junior sysadmins looking to advance their careers.
[I apologize in advance for any typo or errors. Please report any problems in the comments. The conference website has the latest information. Other lists of presentations: DevOps, Programming, Unix/Linux administration technical skills, Cloud Computing, and Women at Usenix LISA.]