Ask any serious GTA V modder, and they will tell you: v1.0.2372.0 is the version you want pinned.
Run GTAV.exe → properties → details → file version
Or look at GTA5.exe in file explorer. Grand Theft Auto V GTA V -v1.0.2372.0 v1.57...
What kind of guide were you looking for exactly? Ask any serious GTA V modder, and they will tell you: v1
A: Fully. And it is actually more stable than newer builds because the editor bug that corrupts clips after 10 minutes was not introduced until v1.61. What kind of guide were you looking for exactly