It's not really hard, but it's not really newbie either. You might want to wait a few weeks and get more comfortable with linux first.
I'm not even sure exactly how to do it in debian, as I'm more of a gentoo user. There are some others on this forum that really know debian much better than I do. They might be able to give more details. I don't think debian installs kernel sources by default. Gentoo always has the kernel sources installed as you always build the kernel yourself during the install. The basic idea is that you install kernel sources with apt-get, then use make menuconfig to edit the kernel config file (or your favorite text editor if you're a purist). Then you build the kernel and install the modules. Finally copy the kernel to the boot partition and make grub/lilo boot it.
It's not that bad, and it's definitely something you will need to learn to do if you want to harness the full power of linux. However, I'd probably wait a few if I were you.