Maybe the tin splash shield by the rotor is rubbing slightly. The answer is that you have to look by jacking up and removing each tire and look for rub markes on the rotor maybe, look at anything that looks too close to the rotor.

You likely have a pinhole in a steel brake line that runs down the floorpan of the car from excessive rust on these lines and now one popped a pinhole. These lines can be repaired. Are you mechanical? Do you want to DIY? First find the leak. You have to get a look under the car but if you do not have suitable jacks and / or ramps then a repair shop will get the job.

Lack of disc brake quiet gel, brake could squeal when pressed.

See this product http://www.amazon.com/.../ref=sr_1_2

Typically, the headlight socket will simply unscrew (turn slightly) to remove the socket itself with the bulb - from the rear of the headlight housing. You should not have to remove the headlight itself.
Try the 'How-To-Guides' feature on the AutoMD website for the specific steps to replace the headlight bulb.

I believe it is a 9mm allen head bolt

brake booster could be going bad

Unplug the wire connector from the reservoir and see if the low brake fluid light goes out. if it does it means that the float sensor is bad inside the reservoir. sometimes just needs a jiggle to fix it.

They have books ( chilton for example) at the parts store or possibly the library that have good instructions and photos. I buy one for every car I own. Makes it easy to have a good reference.