"Get started" is a commonly used phrase that denotes the beginning of an activity or task. However, there are numerous synonyms available that can replace this phrase, and lend a different tone to the sentence. One way to say it is to "commence," meaning to begin something formally or officially. Another option could be "proceed," which suggests moving forward with a particular course of action. Similarly, "embark" connotes starting a journey or enterprise. "Initiate" is another synonym, which means to cause or begin a process or action. In conclusion, a writer could use any of these words instead of "get started" to make their content more engaging.