[Superman]

I had done some soldering before these kits, but building these kits tripled my soldering experience. It is very important to get a soldering station that can adjust the temperature. Some good ones are quite inexpensive. Mine is a Stahl brand. Lots of tutorials to watch and read. These kits involved both point-to-point soldering and also circuit board soldering. The latter is trickier than the former. Solder comes in different thicknesses. For circuit boards, you will want the thin stuff. For removing solder, there are solder suckers and solder wick. I have better luck with solder wick. "no clean" solder wick is WAY better than the other kind.

I don't know much about solid state stuff, but you can certainly read up. AudioKarma and other sites have surely discussed your amp and tuner. With tube stuff, safety is pretty important. The B+ voltage for the Kaiju pictured above is about 530 Volts! Capacitors can retain this voltage long after the unit is unplugged, and can release that voltage in a millisecond. Capacitors should be drained, and you should basically keep one hand in your pocket while you are touching the amp with the other, wearing rubber soled shoes.