Get yourself about 10 microfibre cloths, most of the online suppliers sell them.
Make sure they are of the flat weave variety.
Scrim gets no where close by comparison.
Microfibre cloths can be used straight from the packet, they require no special cleaning or breaking in.
As for using scrim damp.
I've used this method, but if they are damp, the glass may look clean and smear free, but unless you are very skilled there ain't a snowballs chance in hell that they will be.
Bone dry scrim is a pain though, and by dry I mean TOTALLY dry, so I do understand what people are getting at. But don't spray them to get them damp, after 10 minutes of use they will be perfect.
But as a newbie, within 20 minutes you'll probably need a fresh one!!
Concentrate on getting your squeegee technique right, if you are needing to correct mistakes apart from detailing the edges then you haven't got it right just yet.
The only time you should need to use your scrim (or microfibre is you have and sense) is to detail the edges of the pane of glass, correcting mistakes in the middle of the glass can often leave marks that are visible from the inside.
Ian