ok so i have found a few mods on here that i like but i wanted to change them a bit astetically with the 3d modals and all. my question for the editing is how can i go into a mod thats alredy made and get the modles out of it so i can edit them in something like blender. more spasifically maps.

what tools do i need? what programs exetera.

ps i am very very VEEERY new to moding so please exsplain in the simplest terms posable X_X lol