Training at home in Safety and Training March 22 If you have not yet done the basic ground course, there's pretty much nothing you can meaningfully train at home. You need the ground course to know how to do many things properly, then you can practice those at home. If you try stuff before the ground course, it is likely that you'll have to unlearn it later on. And yep, it sucks that all the DZs in the Netherlands are closed right now... Nothing to do but wait.