If your first choice is not available, don t get discouraged. Secure a variation of the name, buy your first choice in an international domain, or get creative. No spaces or other characters are allowed. Spaces are not allowed. Domain names are not case sensitive.
Most users enter in all lower-case letters.
Try to select a domain name that is a maximum of around 15 characters. In theory, you can register any domain name that is available. In practice, however, there are some restrictions. As long as the domain name is still available, you may register it. It is common for people to register their own name for the purpose of setting up email addresses and web sites for themselves and other family members.