Trying not to fry another Nano

Please don't waste your time learning Fritzing.
A pretty Fritzing picture is NOT a schematic, and the Fritzing schematic mode is barely any better. Most people here won't even try to understand a Fritzing picture.

There are a few really good schematic programs. I prefer Eagle (by Autodesk). It has a bit of a learning curve- the most difficult being finding the right part in the library.