How to create your own ttt map?

For the installation uses this : [FR] https://www.youtube.com/watch?v=aKvYBcof7B0
These tutorials are really good.
It explains the essential step by step.
[FR] https://www.youtube.com/watch?v=3h4syKvSaJA
[FR] https://openclassrooms.com/courses/une-map-avec-hammer
[ENG] https://www.youtube.com/watch?v=igHKu0-A...zGO1BYYYNR
[ENG] https://www.youtube.com/watch?v=oL0cR5bZ8mY
Be careful, the language is in French. Try to see the subtitles :D