The best advise i can give you is: first, and most importantly calm down; second, calm down; third, look back at your games and see where you went wrong. Study what your weaknesses are and improve upon them.
Every game is a learning experience, you will find that you improve much faster when you really start enjoying the game. Don't try to win every game just make sure that when you do lose you understand why you lost and when you win you understand why you won. If you make a bad move go back and figure out what the best move would have been.
I started at around 800 and now I just hit 1218. I feel good about it, I'm no GM but i'll be pretty pumped when I make it to 1300.
Good luck and have fun!
The obligatory "I can't figure this game out!" post.
Here's where I'm at: I started playing two weeks ago. I knew how chess worked and that's about it, no prior experience besides grade school play. I bought "Basic Chess" by Levens and "Bobby Fischer Teaches Chess". I've gone through all the problems in Fischer and thought it was outstanding and really helped me see mating positions on the board. Levens isn't that good, but it has a lot of usefull information nonetheless (not enough hand-holding for a novice).
I started playing games against the computer but soon switched to playing 30 | 0 and 15 | 10 games here (much more fun and unpredictable!). And this is where the frustration begins. I've won enough games to get around the 1000 level. I call it a lucky streak because now I seem to be losing every game, even when I have an obvious advantage in position and material. Doesn't matter if they're at my level, +100 points, or -200 points.
I seem to keep making stupid mistakes and no matter how many games I play or what I study I keep making the same stupid mistakes. I'm sure other people have gone through this before, so if someone could share with me how they got over that hump I'd really appreciate it. More games? Less games more studying? More tactics training? I really enjoy the game but losing all these games where I feel like I have it in the bag is really killing my playing confidence.