Sometimes the people know of more specialised sites, having found them useful in the past.
For example someone with Essex roots would know all about SEAX but be unlikely to know about great volunteer projects in Lancashire such as LancashireBMD and Lancashire Online Parish Clerks.
We are truly spoiled in our part of the world, while others have very sparse online resources.
The good news is that there are RootsChatters who are happy to help when you get stuck. Often it is the solving of a puzzle that is rewarding, a bit like a logic problem.
Even those of us who have been around the block a few times get stuck sometimes. A couple of my knotty problems have been untied recently on these boards.