Lang is about nonfiction analysis, rhetorical devices
Lit is more of a “traditional” English class ig b/c you analyze books and symbolism after you read them. With both classes, you have a multiple choice and 3 essays I think. You’re probably more prepared for AP Lit. For Lang you need to read some kind of nonfiction fairly often, such as newspaper articles, autobiographies, speeches, etc. You will need to know stuff like irony, oxymoron, metaphor, etc. For example, you would write stuff like, “In his letter to his cousin, the author implements colorful imagery, precise diction, and emotional appeals to effectively convey his argument that the French Revolution was indeed a worthy cause.” You need to have an assertive voice when you write as if you are debating but don’t use 1st person. Maybe take a look at practice exams