If, when mounting a bandsaw blade, the saw teeth are pointing up instead of down, don't panic. Chances are that the saw blade got twisted inside out as it was uncoiled. To remedy, just twist the saw blade right-side out and it will mount correctly. Watch for this, especially when you are mounting a metal-cutting blade which has small teeth. If used upside down it will cut poorly and the teeth can lose their edge quickly.
Making perfect dovetail joints can involve some shop practice, so consider starting out with a less-expensive jig that is designed for making only one or two types of joint styles. Then you can later work your way on up to the more expensive and versatile jigs that will let you make up to four or more styles of dovetails. With any dovetail jig, try to avoid using a router that is very light; heavier routers will produce crisper and cleaner cuts.