I am mostly a coder, but running a small start-up, I encountered a need to configure 3com and HP switches and routers (VLANs, routing, BGP, etc). Those devices have a complex OS, and the documentation is usually cumbersome. To my surprise, the only site where I got exact answers on this was experts-exchange. Google did not help, stackoverflow did not help. I was about to hire an consultant for a few thousand, but discovered that I could do it myself, paying about $30/mo for e-e.