Some websites and references that I find useful/interesting in no particular order..
A blog I read or at least glance at almost daily:
Join these two organizations:
ACM (Association for Computing Machinery)
Linux Weekly News is an invaluable source of information for our favourite OS..
Monitoring Weekly ! (no longer being updated, but there are archives)
SRE WEEKLY !! Great weekly resource!
Percona Database Performance Blog
Also take a look at Baron Schwartz’s blog
Miscellaneous Performance Sites:
Brendan deserves his own section and, I suppose he’s most famous for his Flame Graphs and his hilarious Shouting demo.
For anyone interested in the “R” Language, these sites are invaluable:
Comprehensive R Archive Network
Brave New Geek is a fascinating blog I’ve been following lately from Tyler Treat.