Movement

Question 1

Open in other window

Answer 1

C-x 4 f find-file-other-window.
C-x 4 b switch-to-buffer-other-window.
C-x 4 . xref-find-definitions-other-window

Question 2

Move to the first non-white character on given line.

Answer 2

M-m

Question 3

Moving by s-expressions.

Answer 3

to fill and explain.
`C-M-f` `C-M-b`
`C-M-u` `C-M-d` 
`C-M-a` `C-M-f` previuos/next funcion definition.
`C-M-k`
`C-M-u C-M-k`

Question 4

Next/previous sentence

Answer 4

M-e M-a

Question 5

Next/previous paragraph

Answer 5

M-} M-{

Question 6

Beginning/end of buffer

Answer 6

M-

Question 7

Pop-up mark

Answer 7

C-u C-SPC will move the pointer to a previous mark.