There are a few options. Some libraries might have copies available for borrowing. Also, official manga apps or the publisher's website could be good places to look.
You can try some popular manga reading websites like MangaDex or Manganelo. But make sure to use legal and authorized platforms to support the creators.
Well, you could check out subscription-based services dedicated to manga, such as Shonen Jump or Comixology. Or sometimes, local comic book stores might carry it too.