Soldering Skills
Tips, techniques and kits you can buy and build
Solder like a Rocket Scientist
Most of what we've done with soldering has been building circuits on circuit boards, but learning how to splice and solder wires together is an important skill, from class projects, to being able to repair home electronics or install car stereos. Even astronauts do it (but they've got a 180 page document on how splice wires) Want to give it try? Here's the simplified instructions
Ultimatum Soldering Guide
While they don't touch on Surface Mount Technologies, Pimoroni's Guide to Soldering goes into a lot of detail.