Our good friend Tom McQuillan - one of the most avid LabVIEW evangelists out there - runs an awesome Youtube channel called Tom's LabVIEW Adventure, where he hosts a series of introductory videos and tutorials to all sorts of LabVIEW-related technologies and topics (such as DQMH, for example).
To become familiar with the latest version of LabVIEW, watch the video Tom made:
What's New In LV2020?
And if you're unsure about the additions to the previous version (LV2019), Tom has got you covered, too, with his What's New In LV2019? video.