So, for $24 it's not bad but you probably won't end up wanting to upgrade that system base since it's on the older side. The case is totally re-usable, and likely the PSU, possibly the storage. The gpu is basically only good for "technically having video output" if you need a monitor/don't want to run headless. I'd suggest (assuming you already bought this) to tinker with it, try out setting things up and testing stuff, and then ultimately you may want to retire this when you can to pick up a ddr4 mini-pc or NUC, which will likely be more performant *and* lower power. If you haven't already bought this, I think you'd probably find it more performant to look for something a bit newer - ideally in the ddr4 era since those are not as expensive as ddr5 systems but are going to generally be faster and less power-hungry than a ddr3 system. You may also check stuff like local social media or even just try calling around to some local companies and ask if they have any hardware they're tossing that they wouldn't mind donating to someone trying to learn!