This study is testing whether a website called Current Together After Cancer (CTAC) can help people who had surgery for colorectal cancer get the right follow-up care. Follow-up care, called surveillance care, is important to find out if the cancer comes back (recurrence). Sadly, many people don't get this care. The website aims to teach patients about the importance of follow-up care, help them feel confident in managing it, and improve communication with their supporters.

There are two groups in the study. One group will use the CTAC website, and the other will use a general health website. Both groups can use their website as much as they want for up to 16 months.

• Study lasts up to 16 months with website access.
• No treatment is given, just education through a website.
• Participants need a supporter to join them in using the website.

To join, participants must be at least 18 years old, have had surgery for colorectal cancer, and be able to read English or Spanish. They should also have someone who supports them, like a family member or friend, who can join them in using the website.