First, decide on the genre or series you're interested in. For example, if you like superheroes, start with the big names like 'Superman' or 'Batman' comics. You can look for local comic book stores. They often have a great selection and the staff can give you advice. You can also check online marketplaces, but be careful of the condition of the books.
To start collecting related comic book and graphic novel, you should do some research. Read reviews online, join comic book forums to talk to other collectors. When it comes to buying, you can start small. Maybe buy a few inexpensive graphic novels first to see if you really like the medium. Garage sales and second - hand bookstores can also be great places to find hidden gems. And don't forget to take care of your collection. Store them in a cool, dry place to prevent damage.
Begin by exploring different types of comic books and graphic novels. Go to your local library and borrow some to see what you enjoy. Once you've identified your favorites, start looking for special editions or first issues. Attend comic book conventions if possible. There you can find rare items and meet other collectors. When purchasing, consider the quality of the paper, the binding, and the authenticity of the item. Also, keep in mind that building a collection takes time and patience, so don't rush into buying expensive items right away.