Ancient Texts
http://www.ancienttexts.org/library/mesopotamian/gilgamesh/
This site features another translation of each tablet, which might be helpful when compared with other translations and sources.
The Question and Answer section for The Epic of Gilgamesh is a great resource to ask questions, find answers, and discuss the novel.
Are you sure he faces Humbaba in chapter 2? Gilgamesh talks about going to the Cedar Forest but I don't think he gets there in Ch. 2.
Enkidu helps Gilgamesh to defeat Humbaba before he dies.
Check out Wrath of the Gods below:
https://www.gradesaver.com/the-epic-of-gilgamesh/study-guide/themes