Volleyball manga has this infectious energy, doesn't it? The way those matches unfold with all the spikes and dives—it's like you can almost hear the squeak of sneakers on the court. If you're hunting for places to read them online without spending a dime, there are a few spots I've stumbled across over the years. Sites like MangaDex or MangaPlus often have a decent selection of sports titles, including classics like 'Haikyuu!!' (which, honestly, ruined me for real-life volleyball—no one jumps that high). These platforms usually rotate free chapters legally, so you get a mix of ongoing series and completed ones.
Just a heads-up though: while some sites offer fan translations, they can be hit or miss with quality. I once read a chapter where the libero was called a 'free defender,' and it took me three panels to realize they weren't talking about some prison-break subplot. For more consistent quality, Crunchyroll's manga section occasionally has free trials or ad-supported reading. And if you're into older titles, check out Archive.org—they sometimes have vintage sports manga scans that are pure nostalgia gold. The thrill of discovering a hidden gem like 'Attack No. 1' (yes, it’s technically shojo, but the volleyball scenes are chef’s kiss) makes the hunt worth it.