I just want to know if I would be able to understand what’s happening in Thursday war without reading Glasslands.
No!!! Glasslands has a lot of crucial information plus introduces the characters. I would make sure you read Ghost of Onyx -> Glasslands -> Thursday War
Yes you should read Glasslands first then Thursday War. You have plenty of time to read both until Halo 4 comes out. Sadly for me I have to buy it online since my Walmart was very slow on getting books that are released on the due date so today it wasn’t there. I’ll get it on ebay or Amazon when I see it for a good price.
Yup, that’s like reading Catching Fire before you read The Hunger Games.
Yes, you definitely should.
yea but u wouldnt have to read ghost of onyx–just be somewat familiar w it
yes OH and before you read Glasslands read Ghosts of Onyx 
I mean yes of course, even reading Ghosts of Onyx would be highly appropriate before Glasslands