I won't say that I know this for absolute certainty but I think we often exaggerate the importance of NOT touching the base edge because with the wrong tool in the wrong hands, of someone that maybe doesn't know any better, the base edge can go from a 1 degree to a 2 degree or even 2+ rather quickly over the course of a few home tuning sessions and the only way to fix or change the base bevel is with a re-grind.
The only thing special about ceramic stones, IMO, is they're very durable and can be used dry or wet. They work great for final polishing and or honing an edge but they don't really do much cutting. It would take a VERY longggggggggg time to change the base bevel with your typical double sided ceramic stone.
Dealing with the "burr" that can develop while you're doing the side edge is just another step in the tuning stage and there are a variety of ways in which it can be dealt with, depending on how significant the burr, is. If the burr is significant or big, then it'll take a bit more work to eliminate it and I say eliminate because with a large burr, you sometimes have to go back and forth from side edge to base edge before you get it completely cut off. If it's big, just running a hard stone, like a white ceramic, will possibly just roll it over to the side edge so it may take a few times going over both bevels before it is gone. I typically use one of three different tools on the base edge, ceramic, Ark. hard stone, and Swix blue gummy. The blue gummy works great but make sure you hold it flat and don't press very hard or you'll dull your edge.
There's no "one" stone that is the holy grail but rather a few different ones that'll work well, provided they're used properly.
You don't need to use a base edge guide but if prefer to use one, then use it. I just hold the stone I'm using flat or slightly tipped up and make a pass or two. One of the things I like about using the ceramic or Ark. hard stone is because they are so fine grained you can really feel the edge through them and after you do this enough you know right away if there is a burr because you feel it through the stone. With a gummy, even the hard blue one, you won't notice it as much and it's important to make sure you keep it flat. Also, when I'm all done I usually will run the blue gummy, with very light pressure, down the length of the cutting edge.
Get yourself a jewelers loop or better yet, one of those magnifying flip down headset things. They aren't all the expensive and they'll allow you to really see what's going one. They work great for a variety of different tasks.