The fine-former-Quake-folks over at FiringSquad has slapped up a dandy CS weapons guide. Here's a nice preview from the first page:
Yes.Where to begin? There are so many topics to cover when learning the ins and outs of Counter-Strike's weapons. Simply picking a weapon to purchase isn't a cut and dry decision. The obvious weapon attributes such as range, accuracy, and damage are important to consider, but other considerations include the map you're playing and the kinds of enemy encounters you'll likely face.