I've been selling/buying on ebay for the past 4 years in about 100 transactions. It's my primary source of income... I'm a poor student
Some tips that I follow (in the order that they came to mind):
1. On popular items, start them at $0.01. Like others have already said, that will generate more views and bids, which is a good thing, because when they get outbidded, they'll bid again, etc.
You can also list it as BuyItNow, but rarely would anyone BIN because they would most likely bid a low price. And ebay charges a nickel for BIN. Regardless, I generally notice that items sell higher than my BIN price (I keep my BIN price reasonable).
2. On not so popular items, start it at the price you're willing to sell it at, if not a couple bucks less. Obviously explanation why.
3. Don't bother with a reserve price on petty items or popular items. Reserve WILL be met (again, unless you have ridiculously high expectations). i think it costs $1 for setting a reserve.
4. Do a search on COMPLETED ITEMS to see what the end price is of similar items. That way, you know what to expect, and what to set a BIN price as.
5. Generally, I advertise free shipping if the item is bought BIN or past a certain price. It gives buyers a price to shoot for.
6. ALWAYS post a picture (shows condition of item, and that you actually have it). And always copyright identify it. So many people have plagarized my works... 1 person stole my entire description and pics in one of my current auctions - would appreciate any ideas on payback :|
he's linking the pic off my webspace, what a moron

I'm looking for the pic of the obese chick sitting in her backyard sipping on a drink
7. Take some time to prepare your layout with HTML. It looks a lot more professional than a sloppy paragraph thrown together. And save it as a template for future use.
8. Start auctions at times to accomodate all times zones. T-R 11PM EST works for me.
Feedback is hard to come by. I think I have about 30 overdue feedbacks that I never received.
When I started, I bought a bunch of little items from big sellers to build up my feedback.
I think about 20 is enough to generate trust to bidders.
Obviously this depends on the value of the item you're selling.
It'll be harder to sell expensive items when you're new, but it's very possible (majority of bidders seem very gullible and not consumer educated).
Hope this helps.