Command Mode (press Esc to enable)
Enter
enter edit mode
Shift-Enter
run cell, select below
Ctrl-Enter
run cell
Alt-Enter
run cell, insert below
Y
to code
M
to markdown
R
to raw
1
to heading 1
2,3,4,5,6
to heading 2,3,4,5,6
Up/K
select cell above
Down/J
select cell below
A/B
insert cell above/below
X
cut selected cell
C
copy selected cell
Shift-V
paste cell above
V
paste cell...