Registering your name servers with NameCheap, isn't complicated. However, we've made a quick guide to assist you with this (Please note, that their interface may change, so this article maybe outdated.):

Registering your name servers:

1. Login to namecheap.com
2. Click on "Manage Domains"
3. Click on the domain you wish to manage.
4. Look on the left hand side, and you will see "Advanced Options"
5. Click on "Nameserver Registration"
6. Register the ns1/ns2 name servers (the IPs you need will be in your welcome email)
7. Click "Add Nameserver"
8. Done!

Changing the name servers:

1. Click on "Transfer DNS to Web Host"
2. Add the new newly created name servers
3. Click "Save Changes"
4. Done!

Doing the above, you have created and then successfully updated the name servers, which have pointed your domain name to your account with us. Please allow up to 24 hours for propagation.

If you have any further questions, or you get stuck, please consider submitting a support ticket.