EasyEDA is an online electronic design automation (EDA) tool. It has all the required parts: schematic drawing, simulation, and PCB layout. It also has some nice features that make sharing easy. Not the least of which is the fact that no one has to install any software.
By the way, don’t forget about Fritzing! That project is still going strong and even better than ever. It’s a great way to get a novice into custom electronics and PCB design.