A domain name is a must to start a website. Though there are many sites which offer free domain names or subdomains, but you will not find .com / .net - top TLD domains for free.
So always go for .com domain as it is most popular and have top SEO value. Now many people are confused on choosing the best domain registrar company. I must say, go with reliable domain company instead of searching for cheap services which will save your $5/year or so.
Remember, how registryfly dropped and thousands of people lost their domain names. So rather go for domain of around $8/year from reliable hosting companies. $10 is not too much for 12 months of domain name and you can easily earn within a few months.
I will suggest Godaddy and Namecheap for domain registration. They also accept paypal and other payment methods.
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