How to Belay: From Beginner to Advanced — The American Alpine Club
How to belay someone heavier than me with Petzl's Grigri - Quora
Unbelayvable: A Questionable Belay Location - Climbing
Static belaying is (more) dangerous - 8a.nu News
BelaySAFE – Climb Safer
Ground Anchor - Climbing Tips | Does your belay partner have more than a couple of pounds on you? Find out how to use a ground anchor. #climbingtips | By Westway Climbing | Facebook
Top-rope belaying with the GRIGRI anchored to the ground. - Petzl Canada
American Mountain Guides Association - Consider a ground anchor if your belayer may be pulled into an obstacle or if the weight difference between the climber and belayer is significant. #amgatechtuesday | Facebook
A Simpler Way to Rig Multi-Pitch Anchors - Climbing
Top-rope belaying with the GRIGRI anchored to the ground. - Petzl Canada
How to build trad anchors with the rope — Straight Up Adventures