Facebook and Instagram Advertising Guide

Facebook and Instagram sit under the same advertising system, which means a single campaign can reach people scrolling their feed, watching Reels, or checking Stories across both apps. That shared infrastructure is powerful, but it also means the platform gives you a lot of dials to turn, and getting the basics right matters more than chasing every new feature.

This guide walks through how Meta advertising actually works, from account structure to creative choices, so you can set up campaigns that make sense for your business rather than copying a template that worked for someone else.

How the Meta ad ecosystem is structured

Every Meta campaign lives inside three layers: the campaign (where you set the objective, such as traffic, leads, or sales), the ad set (where you define audience, placement, and budget), and the ad itself (the actual image, video, or carousel people see). Understanding this hierarchy helps you diagnose problems later — if results are weak, the issue could be the objective you picked, the audience you built, or the creative itself, and each of those needs a different fix.

Meta's delivery system also relies heavily on machine learning to decide who sees your ad within the audience you define. This means your job is less about micromanaging every targeting parameter and more about giving the system a clear goal, a reasonable audience, and enough budget to learn from results.

Choosing the right campaign objective

Objectives are grouped around what you actually want people to do: awareness, traffic, engagement, leads, app promotion, or sales. Picking the objective that matches your real business goal is one of the most consequential decisions in setup, because it tells Meta's delivery system what kind of outcome to optimise for.

• Choose an awareness or engagement objective if you're building recognition for a new brand or product before you have a strong conversion pathway.
• Choose traffic or lead objectives when you want people to visit a website, fill a form, or message your page.
• Choose a sales or conversion objective once you have a working website or store with basic tracking in place, since this needs signal to optimise against.

A common mistake is selecting a sales objective before any conversion tracking exists — the system has nothing to learn from, so results tend to be inconsistent.

Building audiences that make sense

Meta gives you three broad ways to reach people: core audiences built from interests, demographics, and location; custom audiences built from your own data, such as website visitors or a customer list; and lookalike audiences that ask the platform to find people who resemble an existing group. Each has a place, and combining them thoughtfully usually beats relying on one type alone.

For businesses just starting out, a moderately broad core audience often performs better than an overly narrow one, since the delivery system needs enough people to test creative and find the ones most likely to respond. As you collect more data from your own audiences, you can layer in custom and lookalike audiences to sharpen targeting over time.

Creative that works across placements

Because a single ad set can serve across Facebook feed, Instagram feed, Stories, and Reels, your creative needs to hold up in different formats and aspect ratios. Vertical video tends to perform well across Stories and Reels placements, while square or landscape images still work fine in feed. Where possible, prepare a few creative variants rather than a single asset stretched to fit every placement.

Clear, simple messaging tends to outperform overly polished but generic ads. Show the product or service doing what it's meant to do, keep text overlays minimal, and make sure the first second of any video gives people a reason to keep watching.

Retargeting people who already know your business

Cold audiences — people who've never interacted with your business — are the hardest and most expensive group to convert, and it's a mistake to spend an entire budget only on people seeing your brand for the first time. Meta's pixel and Conversions API let you build custom audiences from people who visited your website, engaged with your Page, or watched a portion of a video ad, then serve them a different message than the one aimed at complete strangers.

A simple two-stage structure — a broader campaign introducing the business, and a smaller retargeting campaign nudging people who showed interest but didn't convert — tends to perform better than a single audience doing both jobs at once. Retargeting ads generally cost less per result too, since you're speaking to people who already have some familiarity with what you offer, rather than starting the conversation from zero every time.

Budgeting and the learning phase

When you launch or meaningfully edit a campaign, it enters a learning phase where Meta's system is still figuring out who responds best to your ad. Performance during this window can be uneven, and making frequent changes resets the process, which is one of the most common reasons campaigns underperform.

Set a budget you're comfortable running for at least several days without interference, monitor results at the ad set level rather than reacting to daily swings, and give the system room to stabilise before deciding whether a campaign is working.

It's also worth watching frequency — how many times, on average, the same person has seen your ad — since a small audience combined with a large budget can push frequency up quickly, and performance often declines once people have seen the same creative too many times. Refreshing creative periodically, rather than waiting until performance visibly drops, tends to keep an audience from wearing out.

Reading results without overreacting

It's easy to check Ads Manager several times a day and treat every fluctuation as meaningful, but ad performance naturally varies day to day, especially early in a campaign or with a modest budget. Looking at trends across a week rather than a single day gives a far more accurate read on whether a campaign is genuinely working or just having a normal off day.

• Compare results at the ad set level, since that's where audience and placement decisions actually live.
• Weigh cost metrics alongside quality signals, such as whether leads or sales are turning into real customers.
• Resist pausing and relaunching campaigns repeatedly, since each restart resends the account into the learning phase.

Patience paired with genuinely reviewing the data, rather than reacting to it emotionally, tends to separate accounts that improve over time from ones that stay stuck.