Understanding Modes

Modes are the cornerstone of Vim/Neovim's design. Each mode gives your keyboard keys a different meaning. Fluency in modes is the foundation of efficient editing.

Core Idea

In Normal mode, keys are commands. In Insert mode, keys type text. You should spend most of your time in Normal mode and only enter Insert mode when actually adding new text.

Mode Overview

1. Normal Mode — Your Home Base

Normal mode is the default. Every key press triggers a command — move, delete, yank, search.

You can tell you're in Normal mode: no mode indicator at bottom left
(or "NORMAL" if you have a status line configured)

Essential Normal Mode Keys

Key	Action
h j k l	Move left/down/up/right
w / b	Next / previous word start
e	Next word end
0 / $	Line start / end
^	First non-blank character
gg / G	File start / end
Ctrl+d / Ctrl+u	Scroll half page down/up
Ctrl+f / Ctrl+b	Scroll full page down/up
dd	Delete current line
yy	Yank (copy) current line
p / P	Paste after / before
u	Undo
Ctrl+r	Redo
x	Delete character under cursor
/pattern	Search forward
n / N	Next / previous match
.	Repeat last change

2. Insert Mode — When You Actually Type

Enter Insert mode to add or modify text. Exit with Esc.

How to Enter Insert Mode

Key	Where cursor ends up
i	Before cursor
a	After cursor
I	Start of line (first non-blank)
A	End of line
o	New line below, cursor there
O	New line above, cursor there
s	Delete char, enter insert
S	Delete line, enter insert
gi	Re-enter insert at last insert position

Insert Mode Shortcuts

Even in Insert mode, some shortcuts are available without leaving:

Key	Action
Ctrl+h	Delete previous character (backspace)
Ctrl+w	Delete previous word
Ctrl+u	Delete to start of line
Ctrl+n / Ctrl+p	Next/previous autocomplete suggestion
Ctrl+t	Indent current line
Ctrl+d	Un-indent current line
Ctrl+r {reg}	Insert contents of register
Ctrl+o {cmd}	Execute one Normal mode command, return to Insert

The Ctrl+o Trick

Ctrl+o lets you run one Normal mode command without leaving Insert mode. Ctrl+o A jumps to end of line and returns to Insert. Ctrl+o dd deletes a line and returns to Insert.

3. Visual Mode — Select and Act

Visual mode lets you select text, then apply operators to the selection.

Key	Mode
v	Character-wise visual
V	Line-wise visual
Ctrl+v	Block (column) visual
gv	Re-select previous selection

In Visual Mode

Select with motions, then apply operators:

v3w        → Select 3 words
V5j        → Select 5 lines
Ctrl+v 3j  → Select 3 rows of a column

Then:
d   → delete selection
y   → yank selection
c   → change selection
>   → indent selection
<   → un-indent selection
~   → toggle case
u   → lowercase
U   → uppercase

Visual Block (Column Editing)

Example — add // comment prefix to 3 lines:

Ctrl+v       → Block visual start
2j           → Select 3 lines down
I            → Insert before block
//           → Type the prefix
Esc          → Apply to all lines

4. Command-line Mode — Running Commands

Entered via :. Used for file operations, settings, and search/replace.

Command	Action
:w	Write (save)
:q	Quit
:wq	Write and quit
:q!	Force quit without saving
:e filename	Open/edit file
:vs	Vertical split
:sp	Horizontal split
:%s/old/new/g	Global search and replace
:set number	Enable line numbers
:help {topic}	Open help

5. Replace Mode

Replace mode overwrites characters as you type (like Insert with the Insert key in other editors):

R          → Enter Replace mode
Backspace  → Undo the replacement
Esc        → Return to Normal mode

Checking Current Mode

Look at the bottom-left of the Neovim window:

Display	Mode
(empty or NORMAL)	Normal
-- INSERT --	Insert
-- VISUAL --	Visual
-- VISUAL LINE --	Visual Line
-- VISUAL BLOCK --	Visual Block
-- REPLACE --	Replace

Mode Switching Quick Reference

Common Mode Mistakes

Mistake	What it looks like	Fix
Typing in Normal mode	Commands fire instead of text	Press u to undo, then i to insert
Stuck in Command mode	: at bottom	Press Esc
Forgot you're in Insert	Motions type letters	Press Esc
Ctrl+c vs Esc	Can leave pending operations	Use Esc as default; Ctrl+c for interruptions

What's Next

• Normal Mode Navigation
• Insert Mode Mastery
• Visual Mode and Selection