@elcreative: Unfortunately, I did not miss the point, but perhaps my attempt at humorously portraying my point went wide of the mark.
The benefit of a well programmed supercomputer (Marvin) is that it does do the simple things very well...upload book, tap, read (displayed correctly)...but it also has the other options that medium to advanced users would enjoy. Use of those advanced features is not obligatory.
In any case...there is a certain bliss in not knowing (or caring) what the limits of your circumstance are. I do know a lot of the limits/shortcomings of iBooks. I choose not to deal with those limits and shortcomings even though it does do SOME things rather nicely. I wish you well!
@Mivo: There are several DRM free epubs available in the mobileread library that you can load onto iBooks. However, finding a DRM-free epub created specifically for iBooks may be a little more difficult to find. I'm not allowed to discuss how to remove DRM from an iBook... There is also a link here in the forum to a "test epub" that you can use for several platforms...sorry I don't have it off the top of my head, but you can search for it. I think it was in the ePub forum. That test epub is a collection of common css (book formatting) techniques that shows how well (or not) a particular device displays the formatting. Unfortunately you need to have a little background understanding of what the css SHOULD look like in the first place to determine the performance of the device...
If you are new to css then I would recommend opening the epub in Sigil and comparing it's preview frame with what you see on the device. Warning: Sigil does not display perfectly either
but it is pretty good.
Cheers!
[edit] I found the test epub link here:
https://wiki.mobileread.com/wiki/EPub_Reader_Test