well in the vimeo video i don't see how 3dsmax video is helping me if i use maya?

but i watched it and it moves so freaking fast i can't tell what he's doing. i don't know how he made the uv pieces fit so nicely on top of each other or how he did that mirroring effect?

when i unwrap an object i get like literally 1000 pieces and then what, i'm supposed to lay the right side pieces on top of the left side pieces and thus have mirrored uvs that later i will texture?? it goes so fast for him, my uv process takes like days and days and i get really pissed off because i know i'm doing it all wrong

i was looking for a video to help me on this site

i was looking at this one
https://simplymaya.com/autodesk-maya-...=179&sub_cat=0