IDA Pro newbie Tutorial (GBA, SNES, loader script, GDB debugger)

I modified both tutorials in order to not undo a step of the first one in the second one and added some extra comments and details.

There's a few reads and resources to understand ARM reverse engineering and IDA Pro better. Extra options (if any) of the screens used in both tutorials described in detail in the IDA Pro Book (2nd edition). I'm including more general resources as well:

1) IDA Pro Book, 2nd edition, by Chris Eagle, 2011 (Copyrighted but pdf easy to find on internet)
2) Reverse Engineering code with IDA PRO, 5 authors, 2008 (Copyrighted but pdf easy to find on internet)
3) Reverse Engineering with IDA Pro (2006 presentation by Chris Eagle)
4) Reverse Engineering ARM based devices (2004 presentation by Job de Hass)
5) Reverse Engineering for beginners Alternate (Dennis Yurichev, 2015, ARM examples included)
6) Practical Reverse Engineering, 3 authors, 2014, (Copyrighted but pdf available on internet, ARM examples included in book)
7) ARM basic reverse engineering (by SeungJin Beist Lee, IDA Pro examples included)