I have a Mac computer and want to build a website... is there a good compatible program that is easy to learn?

I would like to know if there is a good web hosting site that you would also recommend. Perhaps one that includes a site builder program that is compatible for Mac or Windows users. I would like to build a comprehensive informational website (I have the time and interest but no programming knowledge) and would like to be able to work on the website from several different locations using either a Windows XP and/or a Mac computer. (My daughter is a professional graphic designer who will be contributing to this endeavor using a Mac computer.) Any positive help is greatly appreciated! Thank you in advance.