Tone Generation

matrixsynth has posted a series of links to a series of .mp3's detailing the history of electronic music from around the globe.
There are 12 in total.

Pro-Audio videos

wire to the ear has put together a little round-up of 5 websites that offer online videos geared towards the audio industry.

Mix
keyboard mag
EQ mag
recordproduction.com
inside home recording

These are probably worth checking on a regular basis as they often have some very interesting videos.

Modulations - Book

I've just finished reading this book - Modulations: A history of electronic music; throbbing words on sound.
It's a collection of discussions on various genres of electronic music collated and edited by Peter Shapiro.
Chapters:
- Pioneers
- Krautrock
- Disco & Post Punk
- House
- Hip-Hop
- Techno
- Jungle
- Ambient
- Downtempo
- Technology

Each section covers the genre in great detail and discusses the main players and some of the key releases.

One of the reviews on the back of the book pretty much sums the book up:

"A primer for the uninitiated and comprehensive history for the obsessive."

Heartily recommended!

Avant Garde Project

The Avant Garde Project is

"a series of recordings of 20th-century classical-experimental-electroacoustic music digitized from LPs whose music has in most cases never been released on CD, and so is effectively inaccessible to the vast majority of music listeners today."

They release regular 'installments' in their series via bittorrents which can be accessed through Pirate Bay or Mininova. The torrents themselves are announced on the I Hate Music forum.
Earlier installments, of which there are currently 117!) can be found at the AGP Archive.

This is a very useful resource for anyone interested in the early history and development of electro-acoustic music.

Mind Maps

gearfire has a nice little article on using mind maps to take notes with.
I find taking notes using simple bullet points and lists is not the most effective way of taking notes as I struggle to remember how certain points inter-connect.

I've been looking into mind maps and have found that they are a useful tool in the note-taking arsenal (depending on the situation).

The article at gearfire discusses the strengths of mind maps and offers some online mapping apps that you can use. To be honest I quite like pen and paper, but occasionally it is useful to be able to include a mind map in a presentation or report.

Kosmix - alternative search engine

Kosmix is a relatively new search engine that works slightly differently to google.

"Kosmix scours the Web to automatically generate home pages for any topic. We strive to connect you to the information that makes a difference in your life. Spend less time searching and more time exploring, discovering and learning."

"Kosmix does standard searches, but it delivers your results by assembling complex “topic pages” on the fly so that you can investigate your search topic from many angles. Kosmix is partnered with many services, so some of the results come from partners, and others are gathered from applying your search string to video libraries and other sources."

via webworkerdaily.com

This is probably a good alternative to google when you are conducting preliminary research into a topic and are looking for a wide variety of info as opposed to a specific 'answer'