Autorouting is the most difficult when you are a beginner, because you don't know how to define the constraints and don't know what results are acceptable. I'd

Autorouting is the most difficult when you are a beginner, because you don't know how to define the constraints and don't know what results are acceptable. I'd even argue that routing is the easy part of PCB design. Figuring out the circuit is hardest, specifying design rules is confusing, determining the component placement is tough, and on the easy end, drawing the schematic and routing the PCB are roughly on par. Routing is the part at the end where you can relax and enjoy yourself while you untangle the ratsnest.