looking for advice or a routine as someone who's never worked out!!

i'm 18f, 5'2, 130lbs. i mostly want to work on building/toning my upper arms!! my arms are currently pretty chubby lol

i've never been to the gym EVER, i just got a membership recently, but i have intense anxiety about going to the gym. i don't know anything about working out or the different exercises and machines.

does anyone have any simple routines? and suggestions for the amount of weight i should be lifting?