Picking either the HTML or the epub version is fine as a starting point, but make sure to pick the one that appears to be the most accurate.
-For this guide, we’ll use The Strange Case of Dr. Jekyll and Mr. Hyde, by Robert Louis Stevenson. If you search for it on Gutenberg, you’ll find that there are two versions; the most popular one is a poor choice to produce, because the transcriber included the page numbers smack in the middle of the text! What a pain those’d be to remove. The less popular one is a better choice to produce, because it’s a cleaner transcription.
+For this guide, we’ll use The Strange Case of Dr. Jekyll and Mr. Hyde, by Robert Louis Stevenson. If you search for it on Gutenberg, you’ll find that there are two versions; we will use this one rather than this one, as it is a cleaner transcription, e.g. has more modern usage of punctuation and compound words, etc.