Make sure you open an external link and PDFs in a new tab/window. It's good website usability.
The biggest web design mistake is: NOT putting your phone number on your homepage
I needed to rent some equipment and found West Coast Rental here in Alameda. I picked up the phone to get ready to call and couldn’t find the phone number anywhere on the homepage, not even in the footer.
I had to spend some time to search for the ‘Contact Us’ button and then found the phone number.
If you expect people to contact your organization, I’d highly recommend including your phone number on your homepage…and maybe on every page for that matter.
PS: After reviewing the site, they might not be able to help me anyway. I was looking for tool rental equipment, not party & event rentals. Oh well.