This is all personal preference. If you are just starting out and learning, I suggest getting a small propane tank at your local hardware store. Then, purchase a torch tip. These are available at most jewelry supply companies (such as Rio Grande) and attach to the top of your tank. Basically, you just screw them on to the top of your fuel tank, so they are very easy to assemble. Examples are the basic torch tip or a pencil torch tip. Rio Grande has a Benzomatic tip for about $50.
The point of all this is that while you solder keeping your metal and solder clean is extremely important, so you need a clean way of soldering and the type of fuel you use is an important element to this.
