1  ## Domain Names: Your Digital Address
 2  
 3  **What is a domain name?**
 4  
 5  A domain name is your website's address on the internet. It's what people type into a web browser to visit your site (e.g., google.com, wikipedia.org). 
 6  
 7  **Why are domain names important?**
 8  
 9  * **Memorable:** Easier to remember than a string of numbers (IP address).
10  * **Branding:** Builds brand identity and online presence.
11  * **Credibility:** A custom domain name appears more professional than a free subdomain.
12  
13  **Structure of a domain name:**
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15  * **Top-level domain (TLD):** The ending of a domain name (e.g., .com, .org, .net).
16  * **Second-level domain (SLD):** The main part of your domain name (e.g., "google" in google.com).
17  - **Subdomain:** The part that is left of the **Second-level domain** (e.g., "class" in class.google.com).
18  
19  **Registering a domain name:**
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21  * **Domain registrars:** Companies that sell domain names (e.g., GoDaddy, Namecheap).
22  * **Registration period:** Typically purchased for one or more years.