CS2 Official Blog : The primary source for update notes and official news. Steam Workshop: For custom maps (like Aim Botz) and skins.
If you are looking for a standard list of helpful resources for Counter-Strike: Global Offensive (CS:GO) or CS2, here are the most common links players usually look for:
HLTV.org : The hub for professional match coverage, rankings, and stats.
CS2Nades: A comprehensive database for smoke, flash, and molotov lineups. Total CS : Commands, binds, and console tutorials.
Leetify : AI-driven performance analysis to track your improvement.