Regular or sequential call signs are generated as the next available sequential appropriate for your license class. Technician calls get pulled either C or D pool. I would say you'll get a D style as I did in July. This is a 2 X 3 or 2 letters then a number according to your regional number and then 3 more letters. My original call as an example was KC3PRU.
My vanity call is one I requested for free on the FCC ULS search website. It is also where you can make administrative station changes like address or email. I filled out a vanity call form that has a reason for request box and then up to 25 various combinations of letters, numbers, and letters again with first entry being the first you want considered. You may use the ULS to search various call combos and see if they are held by someone or if they are vacant. Vacant calls need to be so for 2 years before being permitted to reassignment as I recall. Vanity for technician can be 2X3 D type as I mentioned or C type 1X3 such as my vanity K9DWB. I now have General class as I took that exam in late September.
Vanity requests take about 18 business days for the FCC to approve and make that your legal call. Mine was completed in 13 days. I only listed 2 of 25 possibles as I didn't find most available to my liking. Note that I have a 9 in my call, as vanity calls may have any number that points to the continental 48 states. I think Alaska, Hawaii, and the territories are not vanity assignable. My number 9 alludes to my home being in the Midwest, but I do in fact live in PA, which is part of group 3 as in my sequential call mentioned first.
