Why I can't find the tutorial in the file area of the official website

As a SNAP beginner, I can’t find a tutorial on the official website. I clearly accessed the tutorial area of the file according to the picture.:worried::worried::worried:,I want to master the basic SAR data preprocessing operation. Can you share any good teaching resources for me? I am a research master of Water Cloud Model.

Why can’t you find a tutroial?
It is here:

Which picture do you refer to?

I clicked on this website and found no tutorials.

That’s strange. As you can see for me it is working.
Have you tried to press CTRL+F5?
Which browsesr do you use?

I am a student from China. The browser I use is Firefox.:disappointed_relieved:Ctrl+F5 also no response

Then I have no idea. Sorry.

Thank you for your help.

I would try another browser.

This is the direct link to at least the videos: https://www.youtube.com/channel/UCPnL3aynCQxTOjPttxMiS3Q/search?query=snap