Imagine opening an article about backing up a phone and meeting a string of steps before learning what a backup actually preserves. The directions may be correct, but without that context it is harder to tell which choices matter or what to expect.
Explain the purpose first
A useful opening gives readers a simple frame: a backup keeps a separate copy of information so it can be restored if the phone is lost, replaced, or reset. That explanation does not need to anticipate every technical detail.
It does give the steps a reason. When readers know what they are trying to preserve, a choice about photos, messages, or settings is easier to understand than a menu of options presented without context.
Bring in details when needed
Context works best when it arrives before the detail it explains, not as a long preface to everything that follows. Introduce a term when the reader needs it, then connect it to the task at hand.
This order helps with subjects beyond technology, too. A recipe can explain why dough needs to rest before giving the timing; a guide to organizing a room can state what the arrangement is meant to improve. Start with the reason, then show what to do.