Git merge help

[cajkan]

Hello

i wanna use some merge commands but i cant understand git im still learning

EXAMPLE : i wanna download insider42 repo mangos and scriptdev2

Insider42 said get branch 335 and merge it into 335_mmaps

then 335_mmaps merge it to master or w/e

also same thing goes with Script dev2 335 merge with master

can anyone tell me how to merge it sucessfully coz i really dont know how

would be nice if you help from bigining

THANKS