Video
Scanning
When scanning in your own artwork, or manga, the minimum resolution you should scan in with is 300dpi (dpi is also called ppi, and resolution). Most scanner software has a default setting of 72dpi. As i said, this needs to be 300dpi for video.
300 is just the minimum you should scan with. if you have a fast scanner, 600dpi would be even better.
Photoshop, ect
When you start a new document, always make it 300dpi (resolution).
if you're using an image that's going to be full screen in your video, make sure that it's the same size as your video.
example: your video is 720x480, your image will need to be 720x480
You can change the image size in photoshop by going to image>imagesize.
if you can't get it to full screen size (it may auto-size your height in according to your width, and vice versa), uncheck the box marked "constrain porportions".
File types
JPG, JPEG, PNG, BMP - Do not use these. they will rape your image of it's quality. Plain and simple. Don't use them with video
TIFF - Use it, love it. Gives you large file sizes (usually over 20MBs), but saves the most information about your image.
CMYK, RGB (color modes)
Use RGB for video. RGB is what our minitors use (red, green blue) it's the light that our pixels radiate. CMYK is cyan, magenta, yellow, and key (black). CMYK is the color of inks that mix together when printed.
RGB is for screens, CMYK is for paper.
All rules of video apply here, except for color modes. Use CMYK instead of RGB.
Web:
no need for sections here. Web is all 72dpi, RGB, and JPEG.
Logos:
ah, a mistake i see all too much. a logo made in photoshop.
let me clear this up a bit.
this is not a logo

this is a logo

the difference? vector art vs pixel art.
photoshop uses pixels. a logo is photoshop can't be scaled without looking pixelated.
illustrator, correl draw, freehand, all good vector programs (i use illustrator)
(learn howto use pen tool. it's your friend, and it's in every vector program)
a logo should be simple. don't make a busy logo. don't use alot of colors either. 3 colors at the MOST. the standard file format for vectors is EPS. if your video editing software can take an EPS, awsome. but otherwise, scale it big, and export it as a tiff.
perhaps i'll throw together a photoshop and illustrator guide in the near future[/b][/url]