Simple lor, just get a lens, mount it such a way the front element is directly looking at the sun, the rear element is focused onto some brown/black paper, and see if the intense rays converge onto the paper and start a fire, case closed.
"You will not be remembered for the gear you used, but by the photographs you created"
I think it has been always advocated, in here at least, reading of the user manuals.
I quoted from the user manual as information.
I cited references to support the quoted information.
I guess if that is useful for some, use it.
If as a newbie, there a user manual that is user-friendly, this would be a non-issue.