Skip All Annoying Ads

Skipping an ad: Go to the chapter selection and skip a chapter, then scroll back up to the previous chapter. You have just looped around an ad

Checking for an ad: Scroll halfway to the next chapter so you can see if an ad is preparing, but not enough to actually load the ad

Exiting out of an ad: Go to Settings and set up a button shortcut/hotkey. When in an ad, press that hotkey and you will close out of the ad. Make sure you save the book to your library, or you will lose your page.

Tip: At the end of a book, regardless of whether the book happens to be finished or not, there is usually an ad. Watch out for that.