Hi!
Soldering is soooo easy once you have the right tools.
You should get a "weller" type soldering iron with iron plated tips and Great Planes sweet solder (much stronger than any other sweet solder on the market and the acid is just soo good. I have used this stuff for 30 years and belive me there is no better.
A propane torch is not what I would recommend for modelbuilding ..the temperature when soldering gets too high unless you want to hard solder anything using brass or silver rods. Using a propan torch on pianowire will make it soft and should be avoided at all costs!
I always sweet solder my linkages and has done so for 30 years on both my pylonracing airplanes as well as large aerobatic airplanes with no problem!
Regards!
Jan K
Sweden