American Physical Therapy Association (APTA)
http://www.apta.org
APTA is a national professional organization that provides current research, news in physical therapy, career advice and much more.
Physical Therapist Centralized Application Service (PTCAS)
http://www.ptcas.org/home.aspx
PTCAS is a service that allows PT applicants to use a single application to apply to multiple PT programs.