college???

so i got confirmed for my classes at college after tons of processing and stuff like that but i wasn’t sure if i was gonna even get the job at target when i applied and i was also in the middle of trying to apply to school. i had put open availability because i was open until last night when I got registered into all my classes after weeks of trying to get everything organized and settled with my school. however i do want to work and go to school but how do I tell my tl about this and what the best way to do it? I’m still new (a month and half in)