What’s this?! A newcomer in the Zone?
My recommendation for the order to play is SoC, CoP and CS. SoC and CS also have their own unofficial patches called The Zone Reclamation Project and Sky Reclamation Project which are a must have, especially the patch for CS.
If you ever have questions, ask away on the STALKER thread. I’m a walking encyclopedia when it comes to the STALKER games and I’ll gladly help a fellow stalker 