If you are running a Windows operating system you can use the Windows Media Player and the CD player on your computer to "rip" (copy) your music CDs to your hard drive. You can configure Media Player to copy any music CD it hasn't seen before to your music library. Pop a CD in and the Media Player automatically creates a copy of the music in your music library on your hard drive. The Media Player will even go out on the internet and find the album information and artwork.
It should only take a few minutes per CD to copy to your hard drive. That will depend on the equipment in your computer. Newer machines work faster. I copied my CDs to my hard drive years ago by letting Media Player run in the background while I worked on other things on my computer. Every few minutes the drawer on the CD player would slide out, I'd take out one CD and put in the next. That's all there is to it, once you tell the Media Player where to copy the music to (your music library).
When you want to listen to your music, you just open up your music library, click on the album you want to listen to, and the Media Player starts playing it.
There are lots of fuctions available in the Windows Media Player. They allow you to organize your music in some great ways, e.g. you can take a bunch of your favorite songs and create a playlist. A playlist is like creating the album you wish you could have bought.
There are lots of programs out there that will copy your CDs to your computer. iTunes is another popular one.
I suggest Windows Media Player because there is a very good chance you have it installed on your computer already. It is easy to use with a bit of instructions reading and a lot of people are familiar with it, so there are a lot of people who can help you if you need help.