[Tutorial] Creating Your Legion - Database Editing

Petellius
kam2150
Magnar
Sebidee
Lifthrasir
WHIT3 BROTH3R
The Medieval Kingdoms team
The Total War Karling team
The Terminus Total War team

These are the tools that you'll require:
A legal copy of Total War: Attila with the latest patch. You can't mod illegal copies, plus they're illegal of course.
The Assembly Kit.[forums.totalwar.com] Follow the instructions in the link, or just navigate to Steam - Library - Tools - Total War: ATTILA - Assembly Kit BETA.
The Pack File Manager.[www.twcenter.net] To install this, make sure the gamedirs.txt file that is installed with the Pack File Manager has a line pointing to wherever you've installed Attila, such as ATW;C:\Program Files (x86)\Steam\steamapps\common\Total War Attila and that you select Attila from this drop down menu.[i.imgur.com]
Winrar,[www.rarlab.com] 7Zip or similar software to compress and extract files (not compulsory, but very useful for modding in general).
Notepad++[notepad-plus-plus.org] or similar software to edit text files.
Photoshop, GIMP, paint.net or similar software to edit images.
The CUF font and text rendering tool[www.twcenter.net] (not compulsory).
The Obscure Mechanics of Total War Attila.