Google Ads Basics: How It Works, Your First Campaign and Reading Results

Google Ads basics for beginners: campaign types, account structure, choosing keywords, the metrics to watch and mistakes that burn budget fast.

An air conditioner repair shop owner decided to try Google Ads himself. He set a budget and entered air conditioner as his keyword. Within a few days the budget was gone. There were plenty of clicks, but nobody called to book a repair. Looking at the details, he found most clickers were searching for new air conditioner prices or brand reviews, not a repair technician. This shows Google Ads is not hard, but you need to understand how it works before putting money in.

What Google Ads is

Google Ads is Google's advertising platform that lets businesses show ads on search results, YouTube and websites in Google's network. Search ads differ from social ads because people are already searching for that thing, so the ad answers a need that exists right then. Generally you pay when someone clicks your ad (cost per click), and the price per click depends on competition for that search term and the quality of your ad. To understand the difference between search ads and SEO, read SEO vs SEM.

Main campaign types to know

• Search: text ads on search results. Suits businesses whose customers already search for the service, such as repair technicians, clinics or tutoring schools.
• Display: image ads on websites. Suits building awareness or reminding people who visited your site.
• Video: ads on YouTube. Suits storytelling and brand awareness.
• Performance Max: campaigns where Google's automation chooses channels for you. Suits you once you have clearly measurable conversion data.

Most beginners should start with Search, because it is easy to understand and connects directly to customer needs.

Account structure made simple

A Google Ads account has layers: an account holds several campaigns, each campaign holds several ad groups, and each ad group has its own keywords and ads. A simple rule: each ad group should hold keywords with similar meaning, so you can write ads that match the search closely. An air conditioner repair shop should separate air conditioner cleaning from air conditioner not cooling repair, because searchers want different things.

Choose keywords that match people ready to buy

Think from the customer's side

People ready to hire usually search specifically, such as air conditioner repair near me or air conditioner cleaning Bang Na, rather than a broad term like air conditioner. The Keyword Planner tool in Google Ads can help you find search term ideas.

Use negative keywords to exclude the wrong people

A negative keyword tells the system not to show your ad when a search contains that word. A repair shop might add new air conditioner price, review or job vacancy, so it does not pay for clicks from people who are not customers.

The metrics to watch, and what they mean

• Impressions: how many times your ad was shown.
• CTR (click-through rate): the share of people who saw it and clicked. It shows how well the ad matches what people searched.
• CPC: average cost per click.
• Conversions: the actions you want, such as calls, form fills or purchases. You must set up conversion tracking first to measure them.
• Cost per conversion: the cost of one result. This matters more than the number of clicks.

Lots of clicks does not mean a good campaign. If the people clicking are not ready to buy, you are just paying people to drop by.

Mistakes that burn budget fast

• Keywords that are too broad, with no negative keywords
• No conversion tracking: you cannot tell which ads bring real customers.
• Sending people to your homepage: send them to a page that matches the ad. Read building a landing page that converts.
• Tweaking the campaign every day: the system needs time to learn, and changing too often makes results hard to read.
• Not checking real search terms: the search terms report shows what people typed before seeing your ad, and is the best source of negative keywords.

How to start your first campaign

1. Set one clear goal, such as phone calls from local customers.
2. Set up conversion tracking to measure that goal.
3. Create one Search campaign with ad groups split by service.
4. Choose specific keywords and add negative keywords from the start.
5. Set a daily budget you can afford to spend while learning, and review the search terms report every week.

Google Ads is part of performance marketing. Read the big picture in performance marketing basics, and for structured learning, browse online advertising courses from our partners on Plants.work courses.