mobile_use (In particular, note the tip to view the site on the phone in horizontal mode; the menu in vertical mode is perhaps too long). Another point: the PAPNM site is a mobile-friendly site due to its "responsive website" theme.
The following topics are all available in this new member article (useful for all members). At the top of the article you may click on the "Show Me" section for a step-by-step 11 minute YouTube video (you may skip ahead with the right arrow at bottom of video) .
You may scroll down to the article's following topics or select the individual item here for specific help:
Resizing Images V2.pdf (WIndows or Mac Preview)
How to properly size an image in Photoshop.pdf (Photoshop)