>>3094382here's what you need to know
DPI: 72dpi is perfectly fine for web 300 for printing. If you go into photoshop and adjust your sizing you can swap it between pixels and inches interchangeably to see what you could print to. So essentially if you set 300 dpi on your 16mp dslr photo change the sizing from pixels to inches and that's the largest you can go without having to upscale a little which is fine. Personally I've seen that 16mp is fine for a 16x20 depending on whats getting printed
When you're editing your photos try to avoid doing sharpening until you're exporting and select either sharpen for web or sharpen for what paper you'll be printing with
As for colors just get an ips panel and a hardware calibration tool and try looking at an image on your phone or laptop screen as well to see if anything stands out as being off to you
Try to keep all your crops to certain aspect ratios. If you shoot with a dslr or something just stick to 2:3 and you'll be able to print 4x6, 8x12, 10x15, 16x24, etc without having to make any custom sizing
There's my hot tips and stop stressing about it because its literally the easiest part
