To use a pendulum, hold the chain still between finger and thumb, ask it to show you yes, then no, and watch which way it swings for each. Those two movements are now your code. Ask only clear yes or no questions, keep your wrist steady, and let the small honest swings answer.
How to use a pendulum, step by step
My first pendulum was my grandmother's wedding ring on a length of sewing thread, and it worked as well as anything I have owned since. So do not fret about the tool. Here is the whole method, start to finish.
Sit with your elbow resting on a table, so the arm is supported and the hand stays loose. Pinch the top of the chain, let the weight hang a few inches down, and steady it with your free hand until it goes still. Then let go and ask your two calibration questions before anything else. Only once you know your yes from your no do you ask a real question. Let it swing. Note the answer. Still it again before the next one.

Calibrating your own yes and no
Do not trust a chart that tells you clockwise means yes. Yours might not. Every person's pendulum speaks a slightly different dialect, and you set it fresh at the start of each session.
Hold it still and say, show me a yes. Wait. It may swing front to back, side to side, or in a circle. Whatever it does, that is your yes for today. Now say, show me a no, and watch for the different movement. Some people also fix a maybe, or a not ready to answer. Five minutes of this and you have your code. Skip it and you are guessing at your own signal.
Why it moves, and why that does not make it useless
Most pendulum guides tiptoe around what comes next. The pendulum moves because your own hand moves, in tiny involuntary twitches you never feel. It has a name, the ideomotor effect, and it is well documented. Your muscles answer a thought a beat before your conscious mind catches up.
Plenty of people hear that and decide the whole business is rubbish. I disagree, and here is why. The ideomotor effect does not invent an answer from nowhere; it surfaces one you already hold below the level of speech. The pendulum is a needle on a gauge you cannot otherwise read: your own gut, made visible. That is genuinely useful, so long as you stay honest about what it is. If you want to go further, into charts and boards for more than yes or no, I cover those in pendulum charts, boards, and questions, and the wider divination hub sets the pendulum among its cousins.

Asking questions a pendulum can actually answer
The tool only does yes and no. Ask it something open and you get nonsense back. So the whole craft is in the question.
Bad: what should I do about my career. The pendulum cannot answer that; it has two words in its vocabulary. Good: is now the right time to leave this job. One idea, one answer. Ask the same question three ways across a session and watch for consistency. If the answers contradict each other, that usually means the question is muddled, you are leading the swing, or you already know and do not like it. I dug into that exact frustration in why a pendulum gives contradicting answers. And if you would rather hand a tangled question to a person than a weight on a string, here is how a live chat reading works.
Keeping it honest
The pendulum's weakness is also yours: it tells you what you want when you want it badly enough. Guard against that. Ask questions where you genuinely do not know the answer, and be suspicious of a yes that arrives the instant you hope for it.
And keep it in its lane. A pendulum is for small, low stakes questions and for reading your own gut. It is not for diagnosing an illness, deciding a legal matter, or anything where a wrong answer costs you dearly. For those, see a doctor, a lawyer, or the right professional, and let the pendulum settle which tea you fancy. If you are curious how strong your intuition runs underneath the string, the how psychic are you quiz is a free place to test it, and you can book a proper session with me through my profile.

Questions people ask about pendulums
What kind of pendulum should a beginner use?
Anything with a symmetrical weight on a short chain. A pointed crystal, a metal plumb bob, a ring on thread. Weight helps it swing cleanly, and a chain of four to six inches is easy to control. The material matters far less than sellers suggest. Start with whatever you have before you spend a penny.
Why does my pendulum give different answers to the same question?
Usually because the question quietly changed shape in your head between asks, or because you have an outcome you are rooting for and your hand knows it. Recalibrate, reword to one clear idea, and ask when you are calm rather than desperate. A pendulum read in a panic mostly measures the panic.
Can you use a pendulum for someone else?
You can, though it grows less reliable the further the question sits from your own knowing, since the answer still routes through your unconscious and not theirs. For a friend sitting in the room it can work. For a stranger's private business it becomes guesswork dressed as certainty. Keep that limit in view.
I will admit something. For a long stretch of my early years I was a snob about the pendulum. I had read about the ideomotor effect and decided a tool that moved by my own hand could not be real divination, and I said so, loudly, to people who knew better than me. I was wrong, and it took an old dowser with a bent coat hanger to show me how. The point was never that the string held magic. The point was that it gave my own quiet knowing a way to speak out loud. I have used one most days since.