The following are three excellent free pediatric resources available on the Internet:
The Pediatric Intensive Care Handbook available at https://www.ohsu.edu/xd/health/services/doernbecher/research-education/education/med-education/upload/PICU-Handbook.pdf.
Case Based Pediatrics for Medical Students and Residents, 2004. Available at https://www.hawaii.edu/medicine/pediatrics/pedtext/
Radiology Cases In Pediatric Emergency Medicine, 1996-2000. Available at https://www.hawaii.edu/medicine/pediatrics/pemxray/