[tzs]

For making sure it never expires, I recommend (1) initially buy it for multiple years, (2) every year on your birthday (or on Christmas, or on some other date that is significant to you) add another year, and (3) put a recurring entry on your calendar a week or two after the date from #2 to check to make sure you remembered #2.

I'd recommend for #2 picking a date that you do other annual preventative stuff on, such as changing your smoke detector batteries. That way you build an association in your mind between that other stuff and extending the domain, making it further unlikely that you will forget.

Generally, you can start out with 10 years. Some registrars offer even more, but the underlying registries generally only support 10 years. The registrars that offer more do so by doing 10 years with the underlying registry and then automatically extending that every year transparently to you. If they go out of business more than 10 years before the end of the term they purported to sell you, those remaining years will go poof.

Also have on your calendar reminder for #3 a reminder to check to make sure your contact information still works, particularly email. If you own domain X and use it for email, you probably don't want to use an @X email address as your contact address for the registrar you registered X from. If something goes wrong with your account or domain at the registry and they try to contact you, you don't want their email to you to get eaten by whatever problem they are trying to contact you about.

[Brian_K_White]

So simple everyone can do it.