Re: How do e-books work?
When you purchase an e-book I assume they send some link to your email so you can download it.
Depends on the service, often it's just a PDF in a download area you are granted access to.
Do you have to print the entire book if you want a hard copy?
Not sure what you mean as you can buy the book if you want a hardcopy. But yes, you'd need to print if you want to go soft-hard. Note that some won't allow you to do this easily.
Do you read the entire book on a computer screen?
Or an e-book reader, the more advanced ones use "electronic paper"which doesn't have the downsides of reading on a backlit screen.
Do you have to save the link or file they send you to always have it?
Depends on the service, some will just email you the file and provide you no online backup.
Any help would be appreciated.
Look into the Amazon Kindle. It's the best ebook reader hardware ever paired with the best ebook service ever and comes with free hi-speed wireless access as part of the service. It's "the ipod of ebooks" and the first shot ebooks have had of going mainstream.