Darlo Technical Writing

Task-based how-to guides

$149 · enrolled · 16 min
A short video walkthrough accompanies this lesson. The full written lesson is below.

A how-to guide answers ‘how do I…?’ for someone who already knows the basics and has a specific goal right now. It is the workhorse of most doc sets — the type readers reach for when they’re mid-task and slightly stuck — and its entire discipline is ruthless focus on one task.

Where a tutorial teaches and a reference describes, a how-to gets the reader unstuck. That means respecting their time: they are not here to learn your architecture or browse every option. They have a job, and they want it finished.

The shape of a good guide

  1. Title it with the task, phrased the way the reader would search: ‘Handle a failed payment’, not ‘Payment error handling overview’. The title is a promise; keep it.
  2. State the goal and prerequisites up front, so the reader knows in one glance whether they’re in the right place and what they need before starting.
  3. Give numbered steps, each producing a visible result. Steps are imperative — ‘Send a test event’, not ‘You can send a test event’ — because the reader is doing, not reading about doing.
  4. End at a verifiable outcome: tell the reader exactly how to confirm it worked, and what to check if it didn’t.

Rewrite these overview-style titles as task-shaped how-to titles:

  • ‘Authentication’ → ?
  • ‘Webhooks overview’ → ?
  • ‘Data export functionality’ → ?

Good answers: ‘Authenticate your first API request’; ‘Verify a webhook signature’; ‘Export your data as CSV’. Each names a task the reader can finish and matches what they’d type into search.

Resist the urge to explain everything

The strongest instinct to fight is the urge to be thorough. When you feel the pull to explain why, link to an explanation page instead of inlining it. When you want to list every option, link to the reference. One guide, one task, one outcome. A guide that also tries to teach and also tries to document becomes the confusing all-in-one page we warned about — and helps no one well.

This restraint is a gift to the reader, not laziness. Every sentence that isn’t moving them toward the outcome is a sentence they have to read and discard. The best how-to guides feel almost curt — and readers love them for it.

Finish the job

A guide that leaves the reader unsure whether it worked has not finished its job. The closing ‘how to confirm’ and ‘if it went wrong’ sections are what separate a guide people trust from one they abandon halfway, unsure and annoyed. Confirmation turns anxiety into confidence; the troubleshooting note catches the reader before they file a ticket.

‘Verify a webhook signature — Goal: confirm an incoming webhook really came from us. Prerequisites: your signing secret from the dashboard. Steps: 1) Read the signature header. 2) Compute the HMAC of the raw body with your secret. 3) Compare in constant time. Confirm: a matching signature returns true; log and reject on mismatch. If it fails: check you’re hashing the raw body, not the parsed JSON.’ Short, complete, and it finishes the job.

In the age of AI

AI drafts plausible steps quickly, but it cannot run your product — so it will confidently describe a button that was renamed or a flag removed two releases ago. Draft with AI if you like, then walk the steps yourself on the current version. The walk-through is the fact-check, and for anything task-based it is non-negotiable. A how-to that doesn’t actually work is worse than none, because it wastes the reader’s time and then loses their trust.

Answer, then press Check. Explanations appear after.

Choose oneA how-to guide should…

True / FalseIt’s good practice to link out to reference and explanation instead of inlining them in a how-to.

This lesson is part of Technical Writing Pro

Enrol to unlock all 12 lessons — $149.