Upload materials

Hi,The only file type that Blogger (formerly Blogspot) supports for its blogs are image files in the formats of JPG, GIF, PNG, TIF and BMP. Images uploaded over Blogger are saved online via Picasa. If you use an account there, notice that there's a folder with your blog's name, full of images you uploaded. Because Blogger uses Picasa to host your images, your limit is 1GB of free storage. If you need more space, purchase extra via Picasa.
To upload other file types(pdf,html etc..)we are provided with other facilities like drop box,open box and the details are given in below link..
http://interestingwebs.blogspot.in/2009/01/upload-files-on-blogspot.html