Its not hard, you would just fill out the order form on the website with their details, and then probably would want to fill in an email address @yourdomain.com like customer-name@yourdomain.com so you remember whose account is under which login. That way you can be the technical admin / login user.

Unfortunately there is not a way to do a reseller reseller type of thing, without a dedicated server, though, you could purchase a separate reseller account, then resell that if you wanted.

For the dedicated servers, you don't need to know much about hardware, we handle all of that for you. The $199 dedicated you are looking at would actually probably be faster since there are going to be a heck of a lot less sites on there than your current account.

We can make everything the same as the current WHM / cPanel if you like, and we can transfer over the SSL certificates as well. There will still be dedicated IPs for those sites, but the IP will change to some new IPs that come on the dedicated machine.

HTH