How to Run Facebook Ads: A Beginner's Guide (2026)

What running ads means, and how it differs from boosting a post

There are two main ways to advertise on Facebook. The first is the Boost button under a post on your Page, which is quick and easy: you pick an audience, budget and duration in a few clicks. The second is creating ads in Meta Ads Manager, the full-featured tool for advertising.

Boosting suits simple goals, such as getting more people to see a post or message you, but the options are more limited. Ads Manager lets you choose campaign objectives in much more detail, test several audiences or creatives side by side, and dig far deeper into reporting.

So which is better for promoting a Page? Boosting is fine if you want to test the market quickly. Once you get serious and want to know which ads actually make money, move to Ads Manager, because it is the only place where you see the full picture and have real control.

How Meta Ads Manager is structured: Campaign → Ad set → Ad

The first thing to understand before going further is that every ad in Ads Manager has three nested levels. Once you know what each level controls, the rest of the setup becomes much easier.

• Campaign — the top level, which sets the kind of result you want, such as sales or website visits. The objective is locked when you create the campaign; to change it you have to create a new one.
• Ad set — the middle level, which decides who sees the ad, where, when and for how much. This is where audience, placements, schedule and budget live (unless the budget is set at campaign level).
• Ad — the bottom level, which is what people actually see: the image or video, text, headline, button and destination link.

Choosing a campaign objective: the 6 options in Ads Manager today

Since Meta overhauled its campaign objectives, the dozen-plus options that used to exist have been consolidated into six, and that is still the set in use in 2026. Choosing the objective matters a lot, because the system tries to find people likely to do what you selected. Pick the wrong one and the system gets very good at something you didn't want.

Setting budget, audience and placements

Daily budget vs lifetime budget

A daily budget sets how much you spend per day on average. The system may spend more or less on some days, but across the week it stays within what you set, which suits campaigns that run continuously. A lifetime budget sets a total for the whole campaign with a start and end date, which suits promotions with a fixed timeframe.

On audiences, Meta has been pushing Advantage+ more and more, letting the system find people itself by default, especially for Sales, Leads and App promotion campaigns. Very detailed interest targeting therefore matters less than it used to. What you should still get right is location (the whole country, or only the provinces you ship to), a sensible age range, and language.

Placements are where your ads appear, such as the Facebook feed, Stories, Reels, Instagram and Messenger. The default lets the system choose, which usually gives a better cost per result than picking manually. Beginners should leave the default on, then check the breakdown by placement in reports later.

Creative: the thing that decides results most

As the system gets better at finding audiences on its own, the thing you control that has the biggest impact is the ad itself. An image or video that stops someone's thumb in the first second matters more than spending an hour picking interests.

• Make vertical 9:16 videos too, because Reels and Stories get a lot of views, and landscape images look small and get cropped there.
• State the benefit in the first three seconds. Skip the long build-up — people scroll faster than you think.
• Ad copy should answer three questions: what is this, how does it help me, and what do I do next.
• Prepare 3–5 creatives per ad set so the system can test them, rather than gambling on a single ad.
• Don't overpromise, such as "get rich in 7 days" or "100% cured". Besides getting your ad rejected in review, it makes customers trust you less.

How to read ad results: CPM, CPC, CTR, CPA, ROAS

Once your ads are running, Ads Manager shows so many numbers it can be overwhelming, but beginners only need these five to understand the overall picture. None of them has a fixed "correct" value; compare them against your own business and your other ads.

How much to start with, and common beginner mistakes

There is no minimum budget that guarantees results, but there is a range that gives the system room to learn and gives you numbers you can actually read. The figures below are general guidance from experience, not a promise; real costs depend on your product category, timing and creative quality.

The most common mistakes people make when they start running ads are: tweaking ads every day so the system never gets to learn, switching ads off too soon after just one day, choosing the Engagement objective but expecting website sales, using a single creative for the whole campaign, sending people to a slow page or one without a clear buy button, and not installing any measurement tools at all, so you never know which ad drove a sale.

• Testing the market and creatives: roughly 100–300 baht per day, for at least 5–7 days in a row.
• Small shops selling through chat that are starting to see orders: roughly 300–1,000 baht per day.
• Sales campaigns where you want the system to learn from purchases: set enough budget to get several dozen results per week — work it out by multiplying your expected CPA by that number.
• Set aside a test budget you can afford to lose, such as 3,000–5,000 baht, and treat it as the cost of learning rather than expecting profit in the first month.

Next steps once you get serious: Pixel, landing page and back-end systems

Once your ads start working and you want to scale the budget, what separates people who grow from people who burn money is rarely a trick in the ad settings. It is what surrounds the ads: accurate measurement, a destination page that closes the sale, and systems that watch the numbers for you.

For measurement, read Facebook Pixel and Conversions API. For building a page that turns clicks into purchases, see What is a landing page. A page like this should sit on hosting or a server that is fast and close to your customers, because every second it takes to load is ad money you have already paid for clicks that bring nothing back.

For back-end work such as report-pulling scripts, alerts or automated workflows that need to run 24 hours a day, having your own VPS means you don't have to leave a computer switched on at home. Read more in VPS for media buyers, which explains plainly both what a VPS can and can't do.

1. 1Install the Pixel and Conversions API so the system knows who actually bought. Sales campaigns work much better with this data.
2. 2Build a landing page that matches the ad, loads fast and has one clear button. People who click from their phone will close the tab after waiting just a few seconds.
3. 3Set up automated reporting and alerts, such as a spend summary sent to LINE every morning, or an alert when CPA spikes unusually.