This is not intended for those that have an idea of what they are doing. I have mostly been a Debian user, so much of this is new especially the way apps work.
Once you have downloaded your ISO of choice from www.freebsd.org you can put it on to an optical disk of USB thumb drive, or like I did mount it in VMware.
The basic wizard should get you setup fairly quick, what I would advise though is installing all the options, especially the src (which are needed when installing stuff like the OpenVM tools).
A good intro to Zener diodes can be found @ Mad ScientistZener
Diodes are a special type of semiconductor diode– devices that allow current to flow in one direction only –that also allow current to flow in the opposite direction, but only when exposed to enough voltage. And while that sounds a bit esoteric, they’re actually among the handiest components ever to cross an engineer’s bench, providing great solutions to a number of common needs in circuit design.
In what follows, we’ll show you how (and when) to use a Zener, for applications including simple reference voltages, clamping signals to specific voltage ranges, and easing the load on a voltage regulator.