Are there any complete guides, tutorials or video manuals available for how to set up and run a node?
Running a node can seem daunting initially, but there is a wonderful wealth of community resources that ensure even the most novice of users can fire up a node and participate in the Network!
The development wallet is a full node and can be run on Darwin, Windows and Linux. If you aiming for a stable representative node I would suggest Ubuntu (Linux) running on a dedicated server or cloud VPS.
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Also, skilled people are usually around in the Nano discord server to help interactively with different setups.