Tubular newbie here also
Here's a few hints and tips that I have experienced so far.
Vittoria tubs (latex base tape) are easier to mount even without stretching, I practiced mounting/centering the tubs dry prior to gluing.
I've read continental tubs are a lot harder to mount due to their butly base tape and stretching is a must. They don't always centre a easily as vittoria's (but I suppose it depends upon experience). Ride quality is poorer compared to vittoria/veloflex, but puncture resistance is greater.
Veloflex carbon is my next purchase as they have the performance of vittoria but with better puncture resistance.
I use vittoria mastik which is nice to apply. I use a trimmed down paint brush. I've read continental glue is a bit more stringier in its application and also tries a lot quicker. I apply two coats to the basetape, two coats on the rim, leave 24 hrs between each application and a final quick/thin coat to rim immediately before mounting. Don't be shy with the glue on the basetape around the valve as the basetape overlaps slightly on the tubular and you want good contact with the rim so you don't feel a hop each time you ride over the valve.
Acetone ideal to remove the grease of new rims and white spirits to clean the brake tracks of any glue.
Schwable glue remover is excellent and makes cleaning a rim so quick and easy. I apply the glue remover with finger (gloved) leave for 45 mins or so. Then use a teaspoon to scoop all the glue of the rim. Re-apply the glue remover again, wait another 45 mins then scoop of excess glue and use a rag soaked in white spirits to clean off any stubborn bits. You can leave the glue remover on overninght but make sure you put something on the floor as the glue will eventually drip off the rim.
Like OnPinchy states, practice and definitely read all the glueing tubular forum it's an easy read with lots of great tips. The ride of tubs is like day and night compared to clinchers.
Good luck and take your time applying glue.