This is a personal issue, and different writers approach a beginning in different ways.
The retrospective approach can be useful, where you begin looking backwards at an event and work forward in time to the present.
You can also start at the end and 'demonstrate' in your story how events brought you to that end.
Or you can 'project' into the future.
I started my first book with a 'parallel' look into an earlier (fictitious, based on fact) incident, and then began the main story with a physical observation of the surroundings, rather than passive description.
Use 'strong' verbs that push the story forward. Avoid passive verbs unless you're 'talking' of preparing your readers for something that will happen. Use dialogue often, to drive the narrative onward to its conclusion. End suddenly.