Don't expect to find recent literature to read on the Web. This stuff needs to be out of copyright to be up in full text.

There are a few e-book services by subscription. Those I know of are recent books and either reference, academic, or technical. Such as Britannica Online, Netlibrary,or Books 24x&. Writers of popular fiction are just not going to give their works away.

Catch 22 is in print for less than $10 and you can probably find it in many used book stores or libraries.

BTW, The Online Books page does not host the titles. They provide you with links to texts that are out there. It's a great book index.