Helpful links:

All body systems:
https://meded.ucsd.edu/clinicalmed/
http://pre.clinicalskills.pitt.edu

Surface anatomy:
https://sites.google.com/site/1styearportfolio/

Newborns:
http://newborns.stanford.edu/PhotoGallery/

Orthopedic/Musculoskeletal physical examination techniques:
 http://orthosurg.ucsf.edu/oti/patient-care/divisions/sports-medicine/physical-examination-info/
http://medicine.hsc.wvu.edu/media/16693/resident-ortho-rotation.pdf
http://www.merckmanuals.com/professional/SearchResults?query=Medical+History+and+Physical+Examination+in+Musculoskeletal+Disorders
http://www.orthopaedicsone.com/dashboard.action?atl_token=03bcb29718664ddcfb9fd90f3ef0bb858baf1e21