AMCAS - Apply to most US MD Schools. Look for the current year’s AMCAS Instruction manual on this site and download it to your computer. Read, read, read it! 

AAMC - Resources and instructions for your application

TMDSAS - Apply to Texas MD and DO schools. 

AACOM - Apply to most US Osteopathic (DO) Schools 

MCAT - exam information and registration (Medical College Admission Test) Prepare like crazy and try to take it only once. 

MSAR - The MSAR Online Database with detailed information about ALL US medical schools. Buy it for one year of online access. You need to buy your own access as materials can’t be downloaded, printed, or shared. The best $28 you will spend this year.

ADEA GoDental Research Dental schools and prepare for your application.

DAT - exam information and registration (Dental Admission Test). Part of the DAT assesses your 3-D visual skills, so leave yourself enough time to practice and get familiar with this component.

CASPA - Centralized Application Service for Physician Assistants 

Letter Writing Guidelines - Share this with professors you ask for a letter of recommendation. Choose professors who can comment on your personal qualities.