First off I would not buy any music from iTunes, period. It's all compressed mp3 quality, at the best 256K .. yeech. It's actually cheaper to buy the CD from Amazon.. if you sign up for their Prime membership 2 day shipping is free.. and there's also lots of used CD's there usually less than $5.00
I'm going to suggest that if you're really looking to go simple then start off with just the Sonos System and a real good Dac, a Dac that can grow quality wise with the rest of your system. Sonos will pretty much seamlessly integrate with iTunes, you can use iTunes to rip and manage your music. Just keep in mind that if you don't want a computer on all the time.. then get a NAS.. if you don't use a NAS your music is stored on the computer and it needs to be on in order for Sonos to play the music on it. There are only two places you can store your music, a Nas or the HD of your computer, the Nas is a much more elegant solution; this of course does not apply to internet radio or music services which stream live.
Then once you get comfortable with how this all works.. nothing like real hands on experience, it'll be way easier for you to decide what else you want to incorporate into your system, or what direction you want to take things.
I'm going to suggest that if you're really looking to go simple then start off with just the Sonos System and a real good Dac, a Dac that can grow quality wise with the rest of your system. Sonos will pretty much seamlessly integrate with iTunes, you can use iTunes to rip and manage your music. Just keep in mind that if you don't want a computer on all the time.. then get a NAS.. if you don't use a NAS your music is stored on the computer and it needs to be on in order for Sonos to play the music on it. There are only two places you can store your music, a Nas or the HD of your computer, the Nas is a much more elegant solution; this of course does not apply to internet radio or music services which stream live.
Then once you get comfortable with how this all works.. nothing like real hands on experience, it'll be way easier for you to decide what else you want to incorporate into your system, or what direction you want to take things.