Grammar in Different Texts.

Good morning from Israel.

I am wondering what are the core or the basic differences between a literary text, and any another regular text in the respect or context of grammar? I am asking because I have realised numerous ones, such as:

1. Using different pronouns in the literary one, such as: Thee, thy...
2. "Said he..." in the literary one instead of "he said" like it is used in the regular one.
3. Other suggestions?

What about used grammar in the literary text? I had learnt in one of the semesters in one of the courses where I learn in the college that there are four tenses of:

1. Present.
2. Past.
3. Future.
4. And Participle (correct me if I have been mistaking while typing).

Are they used in the literary text? Why cannot I recognise normal grammar of literary ones? Are they the same used one but in an appropriate context of literature (also please explain it more because I must know English to the core because it is my major in college).

I suggest the commentor to suggest me some websites that help me in explaining basic, intermediate, proficiency, and advanced English grammar. I would appreciate it so much if the suggestor is going to suggest me excellent YouTube Channels that contribute in explaining English Grammar, especially those basic, and advanced ones.

Thank you!