Resources for working with WordPress
WordPress basics–https://codex.wordpress.org/
Image basics —https://codex.wordpress.org/Inserting_Images_into_Posts_and_Pages
More image resources– https://codex.wordpress.org/Using_Image_and_File_Attachments
Image sizing — https://codex.wordpress.org/Image_Size_and_Quality
Here is for a free photo editor for MAC’s:
https://www.movavi.com/mac-photo-editor/
http://www.nchsoftware.com/photoeditor/index.html?gclid=CNPM3ceu2dICFQ6saQodh5EMDA
And you can go to the Council of Public Liberal Arts Colleges (COPLAC) for even more resources: