For more information about this framework visit this website: ACRL Framework for Information Literacy
Popular publications are generally are printed on glossy paper, can be purchased at newsstands or subscribed to for at- home reading, many color images and engaging layouts with advertisements are scattered throughout the publication.
Scholarly articles generally are printed in academic journals where there are little to no color images, no advertisements, Many scholarly journals require professional membership to subscribe to the publication and is not available for purchase on newsstands or general subscriptions.
You typically don’t want to go beyond secondary. But, there are tertiary sources – what do you think that means? Why do you think these sources are less credible than primary and secondary?