Infographics
Topics of general interest:
Red/above baseline = flow towards the US beam
Blue/below baseline = flow away from the US beam
Focused echocardiography:
Applicable to isolated IVC POCUS 
Guidelines for cardiac chamber quantification by British Society of Echocardiography evaluation committee
Pocket guide for pericardial tamponade
Diastolic dysfunction
Myocardial segments
Valves
Venous Doppler
Ultrasound Patterns Across the Spectrum of right atrial pressure (RAP) from Tang, et al. JACC Heart Fail. 2016;4(8):683-686. 
Changes in portal vein color and waveform with increasing right atrial pressure (RAP)
Lung ultrasound:
Abdomen and others:
