here are some tutorials written for making maps:

https://forums.totalwar.org/vb/showthread.php?t=50447 for 1.2 (not incl BI)
https://forums.totalwar.org/vb/showthread.php?t=55804 for 1.4 and above (incl BI)
and BDH's great tutorial for more detailed maps: https://forums.totalwar.org/vb/showthread.php?t=57828

but if you have anymore queries check the 'Tutorial Database' (it's in my sig...)