Carabineers come in different types, which are used for different purposes. There are various levels of rating for every carabineer. Learn how to choose and use carabineers in this climbing video tutorial. Take action: buy the right carabineer, buy locking carabineers, and keep carabineers clean. Josh, the instructor in this how-to video from Live Strong, is an avid climber that resides off the coast in central California. He has managed for a mountaineering sports company for several years and loves the sport.