In locating these main points in a text, the task of comparing them is quite simple. Discussing why the texts may share certain aspects and the ways that make them effective (i.e., do they help to push the purpose of the text?) are the bread and butter of comparing texts. Not only this, but try suggesting reasons why a text may not use the same written techniques as the other.
The three main parts of the text give room for further analysis. Looking at the use of vocabulary or context-specific words, the structure of a text, any obvious opinions/bias, and the year of writing can give clues to figuring out the text’s purpose. These help even when comparing fiction and non-fiction texts.
Type in your favourite song on Genius and watch it analyse every word, line, verse and chorus before your own eyes- understand the meaning, the technique and the language used in your favourite songs and understand the power behind them and how you can use the same techniques in your exams and Speaking and Listening.