Thanks for the reply. Yes, meaning a desktop setup just for doing crypto related stuff like wallet management or trading crypto. Paranoid about using my house computer for managing cause its shared with many people.
You don't really need a guide for this. Get a new PC (preferrably one you assemble on your own), install an OS (preferrably Linux as it is easier to secure), fire it up, and
only use it for crypto related stuff while following basic internet security guidelines. There's no need for fancy, techy set ups as most screw ups in the crypto space could be avoided with better judgement anyway.
If you want one that could double as a miner, you might want to try the Mining section as they could give more specific advice for your hardware needs.