I'm curious as to what books/reference guides/etc. folks would recommend as a way of easing one's self into working with the various Arduino products.  I know there's an Arduino for Dummies book (I'm still looking for a Dummies for Dummies version...) but there may be better guides for helping the novice understand what he/she is getting into working with these little gems.  I'm not worried about learning to program them but the electrical side is still somewhat of a black hole to me.

Enthused with the recent Arduino control of the staging yard, I decided to strike while the iron was hot and try another Arduino project. I'm not very good at learning stuff for the sake of learning (like C programming) without an end goal, so I needed an idea and an arc welding simulator fits the bill.

Welding simulators are common, but I after a quick study of 'prototype' arc welding, I realized there was more to the project than first appeared.

Maybe I'm not using the right search terms but I haven't had any luck finding a solution to a few issues I'm having with a few (new to me) locos. 

I am running DC with a PWM throttle.  I've had no issues running any of my locos outside of one I discovered has a DCC board in it.