the translation by RH Charles is written in Shakespearean-like English, so it may be a bit hard to understand at times. I noticed some of the chapter headings (which are in Roman numerals) are wrong, so it might throw you off.
The content of the Book of Enoch itself is okay. There's a lot of repetition, about 75% of the entire text can be summarized as "God will punish the sinners. The righteous will be saved".