Catechism of the Catholic Church
Click above to access the start of the content on the Sacrament of the Anointing of the Sick. Once on the website, hit ‘Next’ to proceed to the following article.

Compendium of the Catechism of the Catholic Church
Click on the link to access the contents page. Scroll down and click on the heading ‘The Sacraments of Healing’. Then scroll down to read the questions and answers on the Sacrament of the Anointing of the Sick.

American Catholic
This website provides access to articles on the sacrament as well as some questions and answers on the Anointing of the Sick.

Catholic Answers
This linked article provides some commentary on the sacrament.