Grammar topics are usually sorted in books into word grammar and sentence grammar. Word grammar sections are further divided according to the different parts of speech - content words, containing verbs, nouns, adjective and adverbs; and structure words, containing determiners, pronouns, prepositions, conjunctions and interjections. Sentence grammar relates to the construction of phrases, clauses and full sentences, all the way up to paragraphs and full texts.
Nowadays, there are modern approaches to grammar, which bring it alive and relate it to our real life, outside of outdated grammar books containing endless lists of grammar rules. The older prescriptive grammar approach, used to have students theoretically analyze sentences for correctness in literary and religious texts, as if they were training to become linguists.