As time has gone by, I’ve discovered many useful (and some quite valuable) resources out on the Internet for various tasks. Give my link pages a look if you are trying to identify a good resource to try out and see if it works for you as well!
Here are some resources that I've found for Audio Engineering. AudioCheck.net Excellent source of audio test and training material. Definitely useful to help learn and train your ears! EQ Cheat Sheet Sounds typically heard in various frequency ranges plus instruments and their typical highlight spots. EQ Your Ears Another website that lets you focus on...
Internet Protocol Tests
This page contains links to various third-party services that we've found over the years for testing various Internet facing services for our clients. Some of these also provide valuable troubleshooting details that are useful for identifying the underlying cause for an issue that you are seeing. Network Tools Network Tools is our go-to general purpose...
Linux Performance Tools
Found this site referenced on Reddit. It points out many different tools for analyzing performance on Linux. http://www.brendangregg.com/linuxperf.html