The summary.
WHAT DETERMINES HOW A COMPUTER FEELS
Memory and solid-state storage, far more than processor speed.
Do not overspend on a processor or graphics your work does not need.
A LAPTOP KEEPS WORKING THROUGH A POWER INTERRUPTION
Which matters here more than it does elsewhere.
But used flat on a desk it causes neck and wrist discomfort — raise it and add a separate keyboard.
THE MOST VALUABLE ACCESSORY ON MOST LISTS
An external drive for backups.
Budget for the accessories, not only the machine.
SET UP A NEW MACHINE IN THIS ORDER
Updates, a standard account, screen lock, encryption, only the software you need, then backup — before anything important is on it.
WHAT PEOPLE FORGET WHEN TRANSFERRING
Licences, and the authentication application on a phone.
Moving phones without transferring it locks you out of accounts.
CHECK THE COST PER PAGE, NOT THE PRINTER PRICE
A cheap printer with expensive cartridges costs more over its life. Set double-sided and draft as defaults.
BEFORE DISPOSING OF ANYTHING
Sign out, remove it from your accounts, then wipe it. Deleting files does not remove them.