I am new to spider-man comics and i would like a modern age reading order but I don't mind going back if another comic explains something (e.g the origin)
I reccomend you to start reading from OMD (if you care enough you can start reading from JMS run. It was fantastic. Starts in about 480 ish) were a lot of crap was retconned. From there just keep reading Amazing Spider-man. I you'll need to pick up anything else (Spider Island for example) it will be shown (checklist, note at the end of the issue or smthn).
If you are just getting into ASM, I don't think you really need to read One More Day, just start with Brand New Day (#546) and go from there.
I recently got back into Spidey and started with the Big Time (#648), when Dan Slott took over the series as sole writer, and found it very accessible.
I would say your best bet is just read Amazing Fantasy #15, which is where Spidey first appeared. Marvel recently re-released the issue for the 50th anniversary, and if you have the means to read digital you can pick up from Comixology or Marvel App pretty easily.
Marvel also did the Season One graphic novel last year, however I can't attest as to how good it is.
I think Big Time is a good jumping point, it is a great story arc and is very friendly towards people who are new to modern day ASM. It's also a rather recent story arc, as it starts off at issue 648, meaning you won't have a lot of catching up to do.
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