The most common way to publish a large file on the web is by converting it into PDF (Adobe Acrobat) format.
If you have a file stored in MS Word format (.doc) or in some similar file format that supports storing both pictures and images inside the same file, then you need
to use this page: http://createpdf.adobe.com/?v=AHP
to save MS Word document into PDF file.
Once you have a PDF file, you need to upload it to your web site, and you just need to link to it from any page.
People who click on the link, may get the option to open file inside browser window, or to save it.