Hi a very warm welcome to the site and congratulations on the learning journey about to start :) xx
As you've only recently joined your setting can you ask for copies of all policies, procedures, the prospectus and contract details plus the staff handbook regarding your role and responsibilities?
Depending on the age of children you'll be in contact with and if you work in England
The eat better start better campaign is useful reading as is the
NHS's change for life campaign
Check with your course provider which handbook is the most appropriate before spending money xx
Look forward to hearing how it goes