Improve tutorial layout/style

[HonkingGoose]

The tutorial is hard to read for me. When I'm reading the tutorial, I get "interrupted" too much by a new (ordered) list or a flashy admonition.

The page layout/format should make reading easy. I think we can fix things by:

• using more normal body text
• only using the "admonition" styling for really important messages
• reducing ordered/lists

What do you think?

[betterPeleg]

yes i will review it and try to make it easier to go through