What brings newfags are youtubers that cover Q and tell listeners about the Q aggregator sites like qanon.pub, which link directly to the bread. When Q began posting more to /patriotsfight/ the normie incursion slowed, but it still gets newbs onto 8chan and from there, many can then figure out basic site navigation to find current breads. But some youtubers even give tutorials for how to find and post onto QR. Wish they wouldn't, but there it is.
However they come, those newbs that genuinely fit in here study new situations before posting, and we're glad to have them. Those that don't either get run off by the "lurk moar newfag!" and tiddy posting, or remain as narcissist gadflies whose damage to the board is amplified by shills imitating them.