There are many resources out there, I found our pediatrician's hospital to be a great resource.
Through Ai Dupont De Nemours, they have a resource website that has many other topics including Allergy. Kidshealth.org.
Of course the big organizations:
Food allergy research & education FARE/FAAN - https://www.foodallergy.org
Kids With Food allergies - http://www.kidswithfoodallergies.org
American Academy of Allergy, Asthma, and Immunology - https://www.aaaai.org
American College of Allergy, Asthma & Immunology - https://acaai.org
Asthma and Allergy Foundation of America - http://www.aafa.org
CDC - https://www.cdc.gov/healthyschools/foodallergies/index.htm
Now of course there are redundancy on the websites and there are a maze of links.
Come with questions in mind and try not to spend too much time.
Some basics from me:
If unsure then don't take a chance
Read label multiple times and completely
Cross Contact is a priority to understand
If not comfortable with the answer, get clarity
There are lots of data out there.
Try not to spend your valuable time bouncing from one subject to the next
Have a game plan when eating out
Cross contact understanding is important
Labels can be tricky
Write questions you want answered
Give yourself a time limit for researching
Review the websites and sign up for what you see valuable
Call ahead when eating out
Ensure you are comfortable
Make sure you read labels thoroughly