Testors in the black bottle is similar to what used to be Testors tube glue. It's thicker than their liquid glue. I would advise getting Testors liquid cement. It's cheap, is thin like water, and bonds quickly (contains MEK). If you have the opportunity, check out Tamiya's glues. They make a regular and extra thin that is simply superb.
As far as applying liquid cement, do it with a paint brush or brushes. Pick up a sable hair pointed Number 1. This will work for almost all applications. For finer gluing, try a 3/0 or 5/0. DO NOT use nylon (the brushes with the white bristles); the glue will begin to eat those up fairly quickly. Tamiya glue comes with a very fine pointed brush applicator. Again, good stuff. If you are desperate for a tool to apply glue, MicroMark has a glass capillary tube with a wire attached. Fill up the capillary tube and touch the wire where you want the glue to go. I haven't tried it, but some of the guys I model with have them, and according the them they work pretty good. Most of the time, however, we use paint brushes.
For CA glues, get a short, straight piece of paper clip (or needle, pin, etc.) and chuck it into an X-acto knife handle. Take a small square piece of aluminum foil and put several drops of CA on the foil. Dip just the tip in the superglue, and then apply it where you want it to go. You'll find your ability to control placement is much better. There are a lot more ways to do this, and members of this forum wil be more than happy to tell you their method, as well. Hope this helps.
Gip Winecoff