I’ve trained calisthenics, plyometrics and power yoga at home for years and I’m very happy with the results. Just search on Youtube for advice and workouts you like. Use your common sense: look for people focusing on tried-and-true ideas and don’t use performance enhancing drugs.

My favorite channels are Athlean-X, Calisthenics Movement, The Stone Circle and Breathe and Flow.

Also, get a mirror or film yourself to check your form, or have someone watch you. After a while, you’ll start feeling whether something is right or wrong, but at the start it’s useful to have a visual check.