You prob won't learn much from the simulator itself.. but try pspice if you just want one to play around with. Most simulators are based off of spice, so you

You prob won't learn much from the simulator itself.. but try pspice if you just want one to play around with. Most simulators are based off of spice, so you can find a variant. LTspice http://www.linear.com/designtools/software/ltspice.jsp http://www.linear.com/designtools/software/ltspice.jsp is also pretty good As for learning the theory, this site has helped me alot. It has everything you need to know to go from 0, to a highly functional level http://www.allaboutcircuits.com/ http://www.allaboutcircuits.com/