New ed tech & failing

I just started my first job and feel like I don't know what I'm doing- I mean, I don't. I've been in college for 5 years, and worked at a daycare for most of the past year, I also have 2 kids (1 with special needs). I know how to care for children, but daycare or home life is completely different from the expectations in school.

I was thrown in as an assumed functional member of staff on day one, as a 1-1 & haven't really been given any training at all. I was handed a binder of the children's IEPs (only after I asked if there were any materials I should be reviewing before arrival on my first day). And I'm just sitting there with these kids like... I don't know what I'm doing here. I don't know the materials they are using or how they are used, the language they are used to, their likes & dislikes in school, etc. All of the kids are nonverbal, most are elopers, none are toileting independently.

I feel very lost and like I'm not doing things right. I feel like this isn't just a "figure it out" type of job? Am I wrong? I just wish these past few days were spent with someone there showing me the materials the kids are using for their goals, or watching me try and use them and tell me if I'm doing things right... just like, normal training? It's the middle of the year, don't I need to know what the kids have been working on?

I don't know how to respond to situations where the child is running away from me and climbing into a shelf and I can't convince them to identify letters with me and I just feel so embarrassingly unprepared. How am I supposed to know these things without being taught? Am I supposed to just go to school and fail repeatedly until I figure it out? I've never felt so incompetent in my life... its embarrassing and I wish I could go back to snuggling babies, I was good at that.