Question 2

I think it's not possible to have multiple choice flashcards.

Question 3

As far as I know not possible to type in the answer.

Question 1

In my opinion creating flashcards is somewhat unintuitive, because sometimes it's hard to tell for which scope.

Those are the ways I know how to create flashcards:

Shortcut

is option + command + F on macOS, don't know Windows. Also works via right click on a block.

Superblock

First part of the superblock is the question, last one the answer

List

Here you have to make sure, that you select the block

❌ Not like this:

✔ But like this

Example for two flashcards:

Knockout answer

Mark the part that should be hidden later and enable the flashcard with the keyboard shortcut.

Headings

Heading is the question, everything below is answer (until a next heading of the same level)