Website Hosting Space For WordPress
How much space you need to host a WordPress Script website? Not much, Standard space for version 2.8 for instance: 10 Mb is enough for the script package itself. If your blog does not contain images, audios or Videos you just need a little space to hold you text data, another 10Mb is good. But if you need to install some additional plugins or a theme with image header, etc then you will need to have extra space. The best total space for a simple wordpress blog in my mind is about 50Mb.
The higher wordpress script version you installed, usually more space is needed. Currently, 50Mb space is great enough. Hope this information help you get started with your wordpress blog.