Going to Start Residency (Guidelines&Books)

as the title implies, Im starting my Residency in ER. in 2 Months.

i'm Quite thrilled, as it was my first Option. 2 more months to go in the internship.

I came to realise that when you start your residency, "Who" You are will be defined. I want to be the Resident that always work with guidelines rather than Professional Opinion.

In Uni we studied mainly from textbooks for exams. But Now in practical Life, I know that i should be following guidelines, So my question is, (Due to my rather poor searching skills)

(1) Where Can i Find the Guidelines for Emergency Medicine For Eg. The American Association of emergency Medicine Guidelines.

(2) Other Than Oxford Handbook for emergency Medicine, What Small Hand books you recommend for me to use ?

Thank you all and Any insight will be helpful as well. I'm Excited but a little bit intimidated to be honest.

Thank you very much