Studio & gear.
Nowadays it's possible for musicians to set up a home studio with a reasonable budget —especially if we compare it with the price of your typical proffesional studio. Here are a few websites in which both pros and aficionados offer all the information one might need in order to go from idea to recorded CD.
Tweakheadz Lab guide to the home and project studio contains an organised series of articles/lessons, starting from the core basics of modern music technology and going through advanced concepts of studio production. It's quite a comprehensive site that covers not just the basic principles of recording and mixing theory, but also mentions specific machines, electronic toys, sound interfaces and programs (bearing in mind price ranges), and offers a lot of tips to avoid the most common mistakes of the craft.
Online community for musicians where every musical instrument, artefact, piece of gear, hardware or software is reviewed by users worldwide. It includes articles, forums, reviews, classifieds, etc. Good place to check if you're planning to buy some new toy and still have doubts between several options.
Synth Zone is an attempt to ease the search for synthesizer & electronic music production resources on the Internet. Browse the make and model of your favourite gadget and check all the listed sites where you may find information, manuals, software, patches, etc. Don't let the cheesy logo discourage you; there's a lot of useful info contained in this site.