Here are a couple of easy ways to read an ebook without an e-reader:
1) Most ebooks have free reading software right on the site where you bought them. For example, the Kindle reading app is free to download and available for smartphones, tablets, and your computer. The Nook has the same type of program. This is probably the easiest way to read an ebook as these programs are linked to your account on their websites providing instant reading ability as soon as you have purchased the book.
2) Download the PDF file version. From here you have two options. You can print it out from this version and place in a three ring binder or you can read on your computer/smartphone/tablet as a .pdf file. I'm not sure about place saving in the PDF format because honestly I use the kindle app on every device I own plus my actual Kindle. It's a problem. I know.
3) Download and install the free book reading program Calibre. This is an ebook management program that is very easy and free to use. This program comes with the added benefit of being able to open multiple ebook files. Basically if you have some of your e-library in Nook format, some in Kindle, and some in any of the other multitude of formats they are available in Calibre can organize, file, and read all of these from the one program. This is a PC only program so tablets and smartphones are out.
And if none of these options work for you there are plenty of other ones available online. All it takes is a quick Google search and the world of e-reading is thoroughly explored for your convenience.
But most importantly....Have Fun and Keep Reading!
Now don't get me wrong I love physical books. I love books in every form they come in. For a long time I was convinced that I would never love an ebook the same way I loved any piece of my massive physical book collection. Then I moved four times in a single year and I realized that my love of books presented a very real storage and shipping problem. I started reading with the Kindle app and I am so much happier for it. The convenience, the ease, the selection....I could go on and on. That's not to say that I don't still buy the occasional physical copy of a book but now I can keep it to a more reasonable level. I also took some time at the beginning to save up for an e-reader, which can be expensive.