Working papers, preprints and journal articles each have their strengths and weaknesses. As always, use care in selecting research.
White papers, working papers, preprints: What's the difference?
NIH Preprint Pilot - PMC
Comparing quality of reporting between preprints and peer-reviewed
Robustness of evidence reported in preprints during peer review
The rise of preprints in chemistry
Journals article sharing
Increasing Visibility for Preprints.org – Clarivate adds the
Preprints and Working Papers – COAR
Where to deposit your preprint - Peer Community In
Read, Publish, Review
Preprints Research Square