If you are working on web sites there is something you absolutely MUST have: Graphics. You will need an assortment of graphics that you have rights to publish. If you just go grab an image from somewhere on the net, the owner of the rights for the image can sue you. (and will if you are making any money)
You will need two distinct types of graphics: general graphics, and header graphics. General on page graphics are pictures of varying sizes for use on a web age, but the header graphic is generally a large rectangular image at the top of a web page. There is a set of headers in the list to the left.
This package is excellent for your other publications such as PDF’s, e-Books, and as regular clip art.