Here are a few problems that beginners commonly face, along with the pages where you can find solutions to them.
The browser shows the markup typed in (not the result page).
Bold text, italics, headings, or link text are extending longer than expected.
The page I linked to is not found.
Images are not showing up.
Images are looking blurry.
Border images are not showing.
GIFs that were resized now look grainy or have jagged edges.
Check the color space in your image editing program. It should be RGB (not indexed color).
Some text flashes up before showing the correct font.
You have a Flash Of Unstyled Content. p 278
When copying text from word processors, lots of extra tags are added to the markup.
Copy the text into a plain text editor (to remove formatting) then paste it into your HTML editor. p 49
The text looks bigger/smaller on some screens.
The font size is wrong in IE when I use ems.
See above. p 276
The font I specified is not showing in some ...