When taking multiple pictures at an event organizing them can be difficult. My choice of image management is Picasa. You can sort, tag, and export pictures quickly and easily. It is available for both Mac and PC.
Images can help draw your reader into your website. Below are some sites with stock images. Always make sure you have the rights to an image before posting it on the website.
Free Stock Images
Commercial Stock Images
www.veer.com www.istockphoto.com www.shutterstock.com www.corbisimages.com