To do a quantum jump get in a mediating position and focus all your attention into jumping into another universe, visualize standing on a perch in space and jumping from the perch to a door to another universe and talking with yourself from another universe. It is also said that quantum jumping is easier to do while listening to quantum jumping meditation audio though I myself have never done this.
Quantum Jumping is an interesting experience that allows you to see yourself differently and experiece what if scenarios. An example of a what if scenario would be quantum jumping into a universe where you made a different decison in the past that completely changed your future.
The "Quantum" in quantum jumping is only a mention to the idea in quantum mechanics that paralell universes exist and doesn't really have a lot to do with what quantum jumping is.
Quantum jumping can be a fun, interesting, and adventurous experience.
Quantum Jumping is good practice for exomental projection and is much easier thanks to being able to be done with the eyes closed.