Complex sentence: Previous to the TV series, there was a theater based Mickey Mouse Club with the first one started on January 4,1930 12 PM at the Fox Dome Theater in Ocean Park, California with 60 Theaters hosting clubs by March 31.
Split into simpler sentences: Previous to the TV series, there was a theater based Mickey Mouse Club. The first one started on January 4,1930 at 12 noon at the Fox Dome Theater in Ocean Park, California with 60 Theaters hosting clubs by March 31.