Poor choice. Would not recommend. Almost all the references are going over my head, and I really don't feel like chasing them down. Maybe I'll pick it back up after studying the 1905 revolution or if I really get into German social democrat history or whatever. I'll finish it I guess, but I expect to retain nothing and learn very little.
The best part is chasing the references that don't exist lol (S&R is worse at this, but there's a couple refs in WITBD that you can't find the reference for iirc though maybe I'm just misremembering and it's all in S&R). TBH, WITBD is such a context specific to the time work that I don't really recommend it. If you want to understand what Lenin was doing at the time check out Lars Lih's work on it Lenin Rediscovered: What is To Be Done In Context, and then feel embarrassed for the libs and some MLs who took is way too dogmatically lol.