If you are interested in a career in allergy/immunology, consider exploring the following resources:
American Academy of Allergy, Asthma & Immunology (AAAAI):
Fellows-in-Training (includes landmark reading list and career development resource)
American College of Allergy, Asthma & Immunology (ACAAI)
Clinical Immunology Society (CIS)
Immune Deficiency Foundation:
The Immune Deficiency Foundation (IDF) is the national non-profit patient organization dedicated to improving the diagnosis, treatment and quality of life of persons with primary immunodeficiency through advocacy, education and research
Additional guidelines from the AAAAI and ACAAI can be found here.