1. Research: Start by researching cockatiels to ensure they are the right pet for you. Learn about their temperament, lifespan, and needs before making the decision to buy one.

2. Decide on a source: Choose where you want to buy your cockatiel. This could be from a reputable breeder, a pet store, or an adoption center. Each option has its advantages and disadvantages, so consider your specific needs and preferences.

3. Establish a budget: Set a budget for purchasing the cockatiel as well as for ongoing costs such as food, toys, and veterinary care.

4. Know what to look for: Understand the signs of a healthy cockatiel. Look for bright eyes, smooth feathers, and an active demeanor. Avoid those with lethargy, labored breathing or excessively fluffed feathers, as these can be signs of illness.

5. Choose the right age: Consider the age of the cockatiel you want to buy. Younger birds may be easier to train but may require more patience during the initial bonding process. Older birds may already have established behaviors and may not require as much training but may take longer to bond with you.

6. Consider gender and personality: Decide whether you want a male or female cockatiel and consider their typical personality traits. Males are often more vocal and may learn to mimic sounds more readily than females.

7. Visit multiple breeders or stores: Take your time visiting multiple sources before choosing the best fit for you. This will allow you to compare prices, living conditions, and bird personalities before making a final decision.

8. Observe the environment: When visiting potential sources for your new pet cockatiel, observe the cleanliness of their environment and their overall health and living conditions.

9. Interact with the bird beforehand: Once you’ve found a potential match, spend some time interacting with the bird. This will give you a better understanding of its individual personality and help establish an initial bond.

10. Prepare your home: Set up an appropriate living space at home, complete with a cage, perches, toys, food, and water dishes before bringing your new pet home.

11. Closing the deal: Once you feel confident with your choice, discuss any final questions and agreements (such as warranty or health guarantees) with the seller. Be sure to secure all necessary paperwork and arrange transportation for your new cockatiel.

Following these steps will help ensure that you find a happy, healthy cockatiel that suits your lifestyle and becomes a loving member of your family.