One of the most common tasks around the shack is soldering PL-259 connectors onto coaxial cable. Here is an excellent video explaining how to solder a PL-259 connector onto RG213 coaxial cable correctly and easily in under 6 minutes.
NJ2X tips:
Tin the center conductor if stranded - keeps the strand together
Test with a continuity tester to confirm continuity and no shorts
Avoid excessive heat which can deform the dielectric and change impedance and capacitance characteristics