Getting Un-Convent-ionalHugo separates exposition & action, spending pages on character & setting before telling you what they did. Ex: The convent where Valjean & Cosette shelter.
First Impressions of the Donougher TranslationThis translation reads very smoothly. I feel like I'll get through it faster this time - or would, if it weren't for all the endnotes describing the outside references. I'm too curious to skip them!
When Javert Loses His CoolWhen Javert tries to arrest 'M. Madeleine' he can hardly speak. It's interesting to see how different translators handle that.
Getting SchooledEach of the students represents a part of revolution: Enjolras is purpose, Combeferre wisdom, Jean Prouvere the artist, etc. And there's a lot of humor and wordplay in their introduction.
On The BarricadePhilosophical thoughts on revolutions, civil wars, who should or shouldn't fight, and then everyone dies in bullet points.
Finding a Specific eBook TranslationIt's hard to tell which translation of Les Mis you're getting, especially in an eBook store. Here are direct links to the major ones.