Choose Domains → Register a Domain in the menu (or use the search on the home page). Type the name and the results show whether it is free and what it costs per year, with suggestions for other endings (.pl, .com.pl, .eu, .com and many more).
Press Register on the one you want and it goes to the cart like any product. Once paid, the domain is registered to you and appears under Domains → My Domains.
A new domain uses our nameservers (ns1.boost.pl and ns2.boost.pl) straight away. If you have hosting with us, add it in DirectAdmin (Account Manager → Domains) and the website and email start working.
The registrant details are taken from your profile. Check them before ordering - especially the email address, as the registry may send important messages there.
Turn on Auto Renew for every domain you care about. An expired domain takes your website and email down, and getting it back after the deadline can be slow and expensive.