>Schumann Resonance
It's how the Earth rings like a bell electromagnetically when there is a lightning strike somewhere. The frequency at which it occurs is do to the changing size of the ionosphere as a result of changing solar activity. The intensity is how much lightning is banging on the bell.
You understanding of the word "interning" is correct. And you are correct that SR was a paid employee. If Q was mistaken (he's only human) and thought SR was only an intern then he should correct himself so as to not send us in the wrong direction.
The possibility that Q was alluding to the involvement of another person, an intern, who we are unaware of is intriguing. Testimony from someone else who was involved in the leak would be extremely useful. Assange is not the most trustworthy individual.
*Your
>Interns can be both paid and unpaid.
Fair point. However (in the 2min of research before posting), I can't find him being described as an intern. He is usually called a "staffer" or "worker" with the exception of a reference to his internship in Nebraska which resulted in him being "hired" by the DNC.
Okay, It's possible that he could have been called an intern by political staffing standards.