Validation
HUMANITARIAN OPENSTREETMAP TEAM (HOT) TRAINING WEBINARS AND COURSES
Introduction to JOSM [video]
Advanced JOSM [video]
Roads-only Validation in JOSM [video]
Aligning Imagery for Validation [video]
HOT Validation Course (account creation required) [website]
JAVA OPENSTREETMAP EDITOR (JOSM), MISSING MAPS, AND WIKI TUTORIALS
Getting Started with JOSM [website]
Drawing Buildings with JOSM [video]
Missing Maps: Learn to Validate [website]
Missing Maps: Validating For Missing Maps Using JOSM [document]
JOSM Wiki [website]
YouthMappers Validator Training [video]