Hi Bobbi!
Congrats! You should be proud of yourself for completing a project most wouldnt even attempt.
Now that you are familiar with the hardware you can start looking at upgrades for your computer. Most everything nowadays is plug it in and load the drivers, and sometimes not even that lol.
You can add another hard drive, or even explore the possibilities of running a couple of hard drives in a raid configuration. Upgrade and add more memory, even find some sweet deals on a new mobo with cpu combos.
Uh oh here comes the grandkids!