http://www.cpa.ca/docs/File/Ethics/cpa_code_2000_eng_jp_jan2014.pdf

This is a pdf that thoroughly explains ethical behaviour and attitudes.

http://ed.ted.com/lessons/how-stress-affects-your-brain-madhumita-murgia
Ted talks are a good way for students to see a variety of perspectives on the topic they are interested in researching.

https://www.psychologytoday.com/blog/the-athletes-way/201402/chronic-stress-can-damage-brain-structure-and-connectivity
This site provides access to a variety of articles. Here is one focused on Stress.
This article discusses a study related to Stress and its impact on the brain. There are some terms that would need to be clarified to make the resource more accessible for students but that would be a valuable part of the learning process too.

https://www.psychologytoday.com/magazine/archive/2016/05
This resource is interesting for current perspectives on psychological topics.

http://www.simplypsychology.org
This site is valuable because it has brief videos that provide an interesting overview of topics students may be learning about for the first time.

http://www.apa.org
Not only does this resource provide subheadings of many Psychology areas of interest but it also has current APA referencing materials.