You could also try local comic bookshops. Some have an online ordering system or you can visit in person and ask the staff to help you order the DC comics you're interested in.
The DC comic movies usually follow a loose chronological order based on their release dates. But some have standalone storylines that don't strictly adhere to a linear sequence.
You can start by looking at the publication dates. Usually, comics released earlier form the beginning of the story. Also, some series have specific reading guides available on DC's official website or fan forums.
To watch DC Comics in order, it helps to research and make a list. Begin with the classic series and then move on to the related spin-offs and sequels. Don't forget to check out DC's official website or comic book forums for helpful suggestions and discussions.
You can start with the earliest releases and follow the chronological sequence based on the movie release dates. A simple online search for 'DC comic movies chronological order' can give you a detailed list.
The best approach is to do some research. There are many fan-made lists and forums discussing the ideal viewing order. Start with the classics and move forward chronologically.
You can start by looking up a list of DC Comics movies in chronological order on reliable movie websites or fan forums. Then, follow that list to watch them one by one.