Welcome to X10 fractalfeline. I trust you will get a lot out of X10's free hosting service. The cPanel is quite easy to get used to after a while (There is a very good help section on cPanel), and I have little doubt that most, if not all, website functions and services that you had on Geocities will be available on X10 as well.
If you need any help, just ask in the forums and one of us will be more than happy to help you out. Enjoy!