There are lots of materials here ...
https://decibel.ni.com/content/docs/DOC-8923
And though it is a bit dated, frcmastery.com is good if you mostly want to watch videos.
The way I personally get people up to speed in LV is to get them to reprogram a project they recently completed. Say, something from a senior design class. That way they know the problem well, they are familiar with some milestones in the solution, and are mostly learning the tool. If you have a similar app that is strictly PC based, it allows you to do it on just a laptop.
The next step would be to program the robot in the simulator, then on the robot itself.
Greg McKaskle