You can read the novel translations here. They’re downloadable in a variety of formats, or you can just read them online. Personally, I downloaded them in epub format and read them on my phone.
I highly recommend this series. It’s much more popular as an anime, but that adaptation erases a lot of the things I love so much about it. The series notably includes a canon QP relationship between two boys (with no ‘gay panic’) as well as a canon NB character (although they are referred to with ‘he’ pronouns in this translation).
You can read the manga here, and the summaries for the unscanned portion here, if you’d like. I wouldn’t recommend the anime, but if you really want to watch it, you can find it here.