Al,
I don't have another video at this time, but here is what I do...
Rockler sells blue silicon products for applying glue including a device with a brush at one end and a wedge at the other end. I use the wedge end touch it to glue to add just a bit to the wedge and then I touch the top of each segment just inside the two angled edges. This applies a minimal glue line. Depending on the amount of glue on the wedge, you can apply two or three lines of glue befor reloading. I sit in one location and to save time, I load the wedge with glue, put my hand in a location to apply the glue to one of the edges and then rotate the plate with my other hand to do the next segment. I do this for all the segments and then repeat the process with the other edge of teach segment. This allows me to minimize hand movements and get the glue applied consistently.
Everyone has their own technique and o wouldn't say that one works better than another, but this works well for me.
With regards to ring alignment, I've used a $10 laser I bought from Harbor Freight that is used for aligning photos on a wall and that method has worked well. More often, though, I work from a low position where I can look at the turning from above which lets me see when the new ring is aligned with the others.
If you come up with a better approach, please share it with us!
Lloyd