There are lots of options and keyboard shortcuts in atom. You don’t need to learn them all, but the ones below will help you be more efficient. There’s also a flight manual if you want to read more about atom.

atom keyboard shortcuts

moving

keys result

PageUp

move up a page

PageDown

move down a page

Ctrl-g

enter line number, move to that line

Home

move to beginning of line

End

move to end of line

Ctrl-RightArrow

move right one word

Ctrl-LeftArrow

move left one word

copy/paste/delete

keys result

Ctrl-l

select line (repeat to select multiple lines)

Ctrl-Ins

copy line

Shift-Del

delete line

Shift-Ins

paste line

Ctrl-]

indent line

Ctrl-[

unindent line

save/quit/undo

keys result

Ctrl-z

undo

Ctrl-Shift-z

redo

Ctrl-o

open file

Ctrl-n

new file

Ctrl-s

save

Ctrl-q

quit

miscellaneous

keys result

Ctrl-Shift-+

increase font size

Ctrl-Shift--

decrease font size

Ctrl-TAB

go to next Tab

F11

toggle full screen