left4dead.played with some pro today and just know how noob myself is
Hang in there. The game is still a lot of fun to play, even if you only play the campaigns solo.
I picked up on a few fundamentals when Feechy and I played the game a couple of times:
1. Try to get to higher ground than the zombies whenever possible.
2. Don't underestimate the value of gas cans and propane tanks.
3. NEVER disturb the witch!
4. Always check around for areas that aren't on the direct path, they could lead to valuable items like pipe bombs, molotovs, pain pills, etc.
I enjoy the game every time I play it, whether with a group online or by playing the campaign solo.