Are there design rules and PSD samples for site layout?

Question

css

Looking for PSD samples for layout. To take them as PSD design examples. Interested in whether there is a standard for DPI, also interested in the standard for naming layers. Are there any PSD features for layout of a site with pagination, should there be a separate layer for the first page, for the second, even/odd, if the design of these pages differs slightly?
Advise resource where you can see these PSD.

Answer 1

One
Two

Answer 2

DPI shouldn't matter - all dimensions should be in pixels.
There are no standards for naming - for me it’s not necessary to name each layer directly. As a layout designer, I still poke the selection into the desired object and the layer is highlighted for me, I don’t care about its name. The main thing is that one object is not scattered over several layers, if animation or something else does not require it. Let's say a static background should be one layer (possibly with layer parameters), but not with any adjustment layers, masks, etc.
About pagination - if the layout on each page is different from each other (which is already bad in itself), then yes - draw a separate layout for each page. Or, if the design allows, a hidden layer (layer group) indicates design differences for different pages. In any case, the coder should be clear where to insert what.