acting techniques for film

How can I practice acting techniques by myself?

All my time is spent working at a film production company. I know taking acting classes would be useful to me in film but i want to learn either way. I assume acting is something that should be done with a group but i don’t have the time or money. Is there anything I could do by alone?

Use a friend a relative or just a mirror and read the lines and study your face in the mirror and the facial movements match to the emotions in the story.