Step 3:

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The most important thing you need is a cheap pair of amplified PC speakers.  I paid $10 for a pair of "Kinyo" ? speakers and detached the power/input/output wires.   The amplifier is an AC powered 6 watt stereo amplifier.
Some items you need.           Wire strippers ( the automatic kind to the lower right are fantastic !)   various crimps/marrettes . binding posts, bananna plugs, wire snips,a drill and various drill bits. Dremel multitool/bits.  Third hand is very useful.