Getting going

I’ve just started using Snap-2. I find that not much of the available documentation is orientated towards the beginner. In two days I have downloaded an image of c.820Mb in jpeg 2000 format but haven’t got much further, e.g, display an image. There must be lots of starters - is there any documentation along the lines of “Getting going on Snap2”?
November 2, 2018 (Europe: Paris), November 1, 2018 (America: Los Angeles)

there are lots of tutorials here: http://step.esa.int/main/doc/tutorials/
The ones interesting to you should be under “Sentinel-2 High-resolution optical applications”