Vim Tip 4, 5 and 6

Practical Vim

Vim Tip 4 - act, repeat, reverse

Not much to learn here...

The only new things are:

Vim Tip 5 - search with asterisk

Practical Vim

In normal mode, the * command searches the word where the cursor is.

That was the useful thing from this tip.

Vim Tip 6 - dot formula

The dot formula is when you managed to have a situation where you only need one keystroke to move the cursor to your next target and then one keystroke to repeat the last command.