The process is more or less the same as the past few years: You go to the website linked to from the registration page and enter in the information requested.
There is the usual basic contact info and the usual questions about the qualification: time, name of the event, year, link to the results, and a drop down where you tell us what type of event it is (half, full, ppa, ppm, btmr).
The major change will be that instead of one huge long form, it is broken into several pages. During registration, you are allowed to go back if you want to change something. You can even log back in a few days/weeks/months after you register to update things like your address, phone number, or emergency contact information.
I doubt that the race will fill in a few minutes. Thus there is no need to panic if you don't know exactly the order that the questions will show up ahead of time.