split screen effects


New member
i guys i am rather new to all this but have been having great fun with all my toys ,camera, computer , tripods , lights , and even a boom mic and a homemade steadycam , but i would like to start with some special effects work that i can use on my next project and that is the split screen effect or atleast thats what i think its called, ? i would like to have a conversation with myself on camera and even pass my doppleganger a beer should be funny does anyone know of any tutorials available online for this or software taht can be of help . cheers
much gratitude