I'm OK actually,
Sure, if I play my openings out of a book while using a chess site, and don't read properly, I can get bad positions. But OTB I've had fair results for New Zealand. I've been North Island Champion and just missed making the Olympiad team for Bled in 2002 by a point.
I play at a club with two IM's and beat them both from time to time, though naturally enough lose more often. As a coach it's hard to say. I coached the last winner of the NZ Major Open, though personally I thought he played pretty badly. I went to Crete last year as the NZ junior coach, but it was virtually amatuers against professionals over there. And admittedly the under representative in the under 14 boys section for us is better than me, so it was hard to coach him!
To be fair, he's better than most, and had just come from Mallorca where he played in the full Olympiad team for NZ. Coaching is more about taking an objective view of how somebody is playing. From what I've seen on this site teaching of the basics is more of a requirement. Almost every game I've won has simply been by my opponent making elementary mistakes.
One general piece of advice I'd give on here though, is to try to engage your opponents in a post mortem dialogue after the game is over. Unless the game was ruined with a totally crass blunder early on of course. It can be surprising to hear what some players think of their games afterwards. And on a site like this, views that might be totally wrong are rarely going to be corrected.
I guess computer programmes can help you analyse to a degree. Usually though, they'll just notice when someone makes a horrendous mistake that went unnoticed by both players. In other words, if you have a good idea, but your execution of contains a tactical flaw, no computer can ever tell you this.
Finally, whether anything I had to offer on this site would be worthwhile or not, can only be judged once I've actually done it,
. And knowing me, I'd be more inclined to do something with more amusement value than educational, because I'm like that. On the other hand, if anyone wanted to discuss anything in particular I'm usually open to that too.
There are some very good chess writers out there, though we'll all have favourites. For beginners I've found Capablanca, Lasker, and Purdy easy to follow. I remember struggling with Nimzovich however, though maybe I just wasn't ready for it. For more advanced players, there are many more choices. Personally I like Soltis and Suetin. Dvortesky is undoubtedly unexcellent, but can be very hard work. More for the dedicated. Reassess your chess by Sivlerman is a useful book, as is Improve your Chess Now (I think it was called) by Tisdell. (Was it?) But like I said, we'll all have our favourites.