Want one of the best Marvel and DC Guides possible? Check out Comic Book Herald.
This site features extraordinary continuity analysis for both Marvel and DC, and more. If you ever wanted to know what happens before, during, and after, it’s a place of infinite value.
Describing events and timing of comic collections, and even sometimes by the single issue, this site has been used by myself for tons of research and discovery.
DC can be even harder to follow than Marvel continuity, especially with so many reboots, refreshes and origin changes, so the more resources available, the better…
There are also some reviews and useful beginner guides for jumping in…