Add a paragraph about reverse engineering and it would be perfect xD (didn't see one)
Reverse engineering in what sense? The materials stuff seemed kind of outside the scope of that post (and most of the time reads have a set of callipers and know the basics of materials science), much of the security/electronics stuff I thought was kind of implied and software wise.... well we have a whole other thread/doc for that
http://gbatemp.net/threads/gbatemp-rom-hacking-documentation-project-rewritten-for-2012.73394/
Unless you meant something like "normal order of operations for cracking a system"
Find where the code comes from (CD, SD, USB, memory, custom cartridge, LAN, Flash memory somewhere on PCB....). Try to get a copy of this for analysis.
Can you mimic it or subvert it to read from somewhere else? This might be a later step.
What type of processor/instruction set does the device use? Realistically it will probably be a well known one (intel x86 family, intel 8080/Z80, 68K, some form of powerpc, ARM...)
Can you inject your own code in there anywhere?
Is there any security preventing you from doing as you please? Attack the implementation (quite possible but not surefire) or attack the hardware controlling it (harder and more expensive but usually doable if you are willing to invest enough). There may also be levels of code where you can only do a limited amount without cracking higher up in the system (see userland vs kernel).
Feel out the rest of the hardware and setup (graphics, network, controls, storage, any BIOS/firmware/inbuilt libraries/hypervisor commands) and document them. You may also want to alter/remake the BIOS/firmware/library/hypervisor stuff according to your particular whims.
Congratulations you have a hacked device.
By the way for the others reading something like that would be a variation on the 8 steps thing I was on about earlier. The order might change and it might instead resemble more or a "choose your own adventure" type book or flow chart in practice but that is basically it.
Edit. Wait you did not mean "this is a protocol debugger", "this is a digital storage oscilloscope", "this is how to read the numbers on top of chips" type thing? If so then I would probably say
http://www.eevblog.com/episodes/ <- watch all of it and continue watching it as he puts new stuff out.