What it means
たり～たりする lists two or more representative actions and means doing things like one action and another. The actions are examples, so the list is usually not complete. Attach たり to the ta-form of each verb, and use する for familiar speech or します for polite speech. The final する or します shows the tense and politeness of the whole sentence.
Usage note
たり～たりする presents actions as examples rather than a strict sequence. Do not confuse it with linking verbs using ～て, which commonly describes actions performed in sequence or gives a reason.
How to use it
Verb (た-form)りVerb (た-form)りします
私は週末に映画を見たり、本を読んだりします。
On weekends, I do things like watch movies and read books.
Verb (た-form)りVerb (た-form)りする
私は週末に映画を見たり、本を読んだりする。
On weekends, I do things like watch movies and read books.