Calming a baby requires patience, attentiveness, and a variety of techniques as every baby is different. Here are some effective ways to calm a baby:

1. **Swaddling**: Wrapping the baby snugly in a blanket can mimic the feeling of being in the womb, which can be comforting.

2. **Rocking or Swinging**: Gentle rocking or swinging motions can help soothe a baby. You can use a rocking chair, a baby swing, or simply cradle the baby in your arms and sway gently.

3. **White Noise or Music**: Soft sounds like white noise, gentle lullabies, or even the sound of running water can have a calming effect on babies by masking other noises and providing a soothing background.

4. **Skin-to-Skin Contact**: Holding the baby close to your body can regulate their temperature, heart rate, and breathing, and create a sense of security.

5. **Offering a Pacifier**: Sucking is a natural reflex for babies and can help them calm down. A pacifier can provide comfort and help them self-soothe.

6. **Feeding**: Hunger is a common reason for a baby's fussiness. If the baby is hungry, feeding can help calm them down.

7. **Gentle Massage**: Lightly massaging the baby's back, tummy, or limbs can help relax them and ease any discomfort they may be experiencing.

8. **Warm Bath**: A warm bath can be soothing for babies, especially if they are cranky or having trouble sleeping.

9. **Change of Environment**: Sometimes a change of scenery can distract and calm a fussy baby. Take them for a walk outside or move to a different room.

10. **Offer Comfort Objects**: Some babies find comfort in soft blankets, stuffed animals, or a favorite toy. 

11. **Check for Discomfort**: Ensure the baby isn't uncomfortable due to a wet diaper, tight clothing, or feeling too hot or too cold.

12. **Calm Environment**: Create a calm and quiet environment by dimming lights and minimizing noise and stimulation.

Remember, it may take some trial and error to find out what works best for your baby, so be patient and responsive to their cues.