Good tutorial/how to for radio installation

[Belgian951]

Now that my car is officially OK'd by the government to be on the road (yay!), I can start working on some 'not necessary stuff' such as a new car radio.

Months ago, I bought a Blaupunkt Bremen SQR 46 but I'm a bit unexperienced in radio installations. Last time I did it, it was in a BMW E36 and I basically let someone else do it .

Do you know of any guides that really explain the general principles of a radio installation well? I'd appreciate it!