This may seem like a stupid question but I'm still a noob to Photoshop.
I just wanted to know, what's the best comic size for when you use Photoshop?

What's the best size to use when posting on here, I mean.

Nah, not a stupid question. It's a good question. :]

The ideal size for posting to the web, in my opinion, is no wider than 800 pixels. That way pretty much everyone can see it without having to scroll all the way over to see the whole width of the page. Length is more variable, because people ewill obviously expect to scroll down... but just throwing a number out there, I'd say no taller than 1000 or so. Again, just my opinion. My comic pages, by the way, are 510 x 660 pixels.

Are you working entirely on the computer? As in, sketching and inking? If so, then work a bit bigger, and then resize it before posting.

Yeah it's all done on the computer so I'll definitely be taking your advice on the width of 800 pixels and working bigger by resizing.

Thanks a bunch!

Also, just to add something to this, I use the "Save for Web" feature in Photoshop ONLY after I've reduced the dpi of my art from the 300dpi I work in, down to 72 dpi, keeping it less than 800 pixels wide, and then save it for web.

I don't know that it helps alot, but it does seem to compress the file size lower.

I had wondered about this too. I would like to do any drawing on paper and scan it in. :)Does it matter how large the original picture is? I know if you scan higher, it's better when reduced. :)

And of course, my scanner bed is only so large. Hmm. I think I'm getting an idea at least.

By all means scan it large. Just remember to resize it before you upload.

I work my originals at A4, 300 DPI. To upload I resize to 810 wide and 72DPI. Make sure you keep the originals. Printers need work at 150 DPI minimum, 300 is better.