Venom was first introduced in The Amazing Spider-Man #299 in May 1988.
Venom first appeared in The Amazing Spider-Man #299 and #300.
The debut of Black Panther in comics happened back in 1966. Since then, he's become a significant and popular character.
It's tough to say exactly when the first zombie showed up in comics. Different comics have presented zombies at different times, and it's a matter of extensive research to figure out the very first instance.
Venom first appeared in The Amazing Spider-Man #299 in 1988.
It can be highly valuable, especially if it's a rare or early edition. The popularity of Venom often drives up the worth of such comics.
Negan is introduced in issue 100 of The Walking Dead comics.
Loki's initial appearance in the Avengers comics was in the 1960s. This introduction set the stage for many exciting plot developments involving him and the Avengers.
Tony Stark was first introduced in comics in 1963.
You could start with the classic Venom: Lethal Protector series. It gives a good introduction to the character and his motivations.
No, Venom is not depicted as gay in the comics. His character is usually focused on his symbiotic relationship and battles rather than his sexual orientation.