[Eagle Manual]

The manual is already posted, so all I can do is post the tutorial (v4.16). Enjoy my little contribution.

http://rapidshare.com/files/8761762/tutorial-eng.rar

[Peak Inverse Voltage of a rectifier]

Peak reverse voltage or simply means how high the voltage can be over a reverse biased diode.

For instance, over a 1N4148 signal diode VRRM can be no higher than 100V. If you apply a higher voltage the junction will be damaged due to zener or avalanche effect.

Two ratings who are important for a rectifier are IF (forward current) and VR (reverse voltage).

As a non native English speaker I hope I've made myself clear.

[Basic Transistor Circuits questions]

A rule of thumb I learned in school:

Ure (voltage across emitter resistor) = 1/10 Uv (power supply voltage)
Uce (voltage across collector-emitter) = 1/2*(Uv - Ure)
Urc (voltage across collector resistor) = 1/2*(Uv - Ure)

[Small Cap between OpAmp Input Pins?]

It is used to block all RF interference.

[Collection Services Manuals]

Please beware, it's not  a free service

[Something about Digital to Analog Converter]

I guess you will have to live with that. When you take a closer look at the specs (page 3) you will see that the zero-code error is between 1mV and 9mV.