I have decent chisels and sharpening stones but I never tried to sharpen them. What is the trick? Good tutorial?
Here is a good one:
Paul Sellers has a wealth of information between his youtube channel, books, dvds, and blog. Everything translates or has some application to what we do here.
Burr is just another name for a wire edge, you hear them used interchangeably.
After you sharpen your chisels you can run your thumbnail up towards the bevel and the lip it snags on at the edge is the burr and needs to be removed.
I remove my burr differently than Sellers, I give them a light stab into some hardwood end grain and give it a gentle twist. His way is probably better but my way works for me.
The actual angle you hold doesn't matter as much as the consistency you hold that angle at while sharpening. Just pick an angle and hold that angle. One of the biggest mistakes people make is they're constantly adjusting during their stroke or they can't hold whatever angle they settled on and it creates a rounded dull bevel.
Here is an image I quickly pulled off the internet somewhere, there are probably better ones out there but this should work:
The secondary bevel is what you saw Sellers sharpen when he had the chisel at a steep angle, that is the actual cutting surface. The back and primary bevel are just polished on the stone to help facilitate with the cutting. The vast majority of your sharpening will be done to touch up the secondary bevel.
A good analogy to shoot for would be a well trimmed finger nail: the secondary bevel should resemble the tiny line of white nail at tip.
I would advise against using an angle guide for sharpening anything except maybe a plane iron. For one, they are too expensive and limited in application, and secondly because you should be able to hold a consistent angle while sharpening, the control to be able to do that will translate into other aspects of building, and if you can't then you have plenty of time to practice before your kit arrives.
What brand and type of chisels and stones do you own?