I wanted to share my favorite circuit simulator to the electronics group. It isnt the most advanced and it wont replace professional tools. But its great at modeling semi-ideal components with an epic way of visualizing current and voltage that just makes it an amazing tool at getting a feeling for how circuits actually work.
Everyone should check it out and play with it, you wont regret it.
@IAmAWarCrime yea he has great stuff all around. A bit dated but still cool and useful.