This document provides an overview of online teaching and learning. It discusses key elements of online instruction including course design, student engagement, and assessment. The document outlines best practices for online teaching such as making learning active, using a variety of resources, having a visible instructor presence, and applying andragogical principles. It also discusses common course design problems like endless content, unintuitive navigation, unclear directions, low accessibility, and broken links. The goal is to build foundational knowledge for instructors new to online teaching on creating effective online courses and student-centered online learning experiences.