Can anyone help me understand the process flow of domain flipping?

Hello all! I see a lot of people making good money in domain flipping. I wanted to know the process particularly

1. How do I purchase domain names that are worthy of money like stocks? What are the points I should check?

2. Where to get those domains from and where to park it?

3. How to sell it in bids or directly?

4. How does someone make profit out of it?

Choose a reputable domain name provider to purchase your domain name (like GoDaddy, Namecheap, or Google Domains).