Yes, don’t worry about asking questions. We’re all in this together and trying to help each other to our abilities. 
Reading a book in Japanese for the very first time will be hard in the beginning but if you struggle through and stick to it, you will notice some progress!
Also, here are some resources and links that might be helpful for those reading for the first time:
- https://jisho.org/ (for vocab/kanji)
- https://ichi.moe/ (for whole sentence break-downs)
- if you own them - Dictionaries of Japanese Grammar (for grammar)
- https://bunpro.jp/ (for grammar)
- http://www.guidetojapanese.org/grammar_guide.pdf (Tae Kim’s gammar guide)
- the book club thread
And if we have a shared vocab sheet - that can make reading a lot easier as well. Maybe we can start working on the vocab sheet now even though there’s still about 2 weeks a week until we start?