I created these study guides for when I took Step 1 in 2016. I used First Aid with a little Firecracker supplement, and made sure they all fit on 1-2 pages each. They're not doing me much good on my computer, but feel free to download them, edit them, and use them to destroy Step 1. They also make for condensed study guides for rotations, if you keep forgetting certain drugs or diseases.
Biochemistry
Vitamins
Rate-Determining Enzymes
Genetic Pathologies Disorders
Cardiology
ECG Phases and Abnormalities
Physical Exam Findings and Maneuvers
Vasculidities
Congenital Cardiovascular Pathologies
Cardiovascular Medications
Endocrinology
Hormone Receptors
Endocrine Pathologies
Endocrine Medications
Gastrointestinal
Congenital GI Pathologies
Upper GI Pathologies
Lower GI Pathologies
Hepatobiliary and Pancreatic Pathologies
GI Medications
Hematology/Oncology
Clotting Disorders
Anemias
Leukemias, Lymphomas, and other Neoplasms
Heme/Onc Medications (Including Chemotherapeutic Agents)
Immunology
Immune Physiology
Immune Pathologies
Immune Medications
Microbiology
Gram Positive Bacteria
Gram Negative Bacteria
Other Bacteria
Bacterial Features, Toxins, and Growth Media
Antibiotics
Fungi
Antifungals
Viruses
Antivirals
Protozoans
Helminths
Hints for Specific Systemic Diseases
Musculoskeletal
MSK Pathologies
MSK Medications
Dermatology
Neurology
Neurologic Development and Congenital Pathologies
Neurologic Pathologies
Ophthalmologic Pathologies
Neurologic Medications
Pharmacology
Receptor Actions, Agonists, and Antagonists
Drug Side Effects
Specific Treatment of Drug Toxicities
Psychiatry
Psychiatric Pathologies
Psychiatric Medications
Recreational Drugs
Pulmonology
Pulmonary Pathologies
Pulmonary Medications
Renal
Renal Physiology
UTI, Stone, and Cast Findings
Renal Acid/Base Balance
Congenital Renal Pathologies
Acquired Renal Pathologies
Nephritic and Nephrotic Syndromes
Renal Medications
Reproduction
Developmental Milestones
Embryologic Development and Pathologies
Female Pathologies
Male Pathologies
Reproductive Medications