If you are concerned about your drug or alcohol use, there is support available to you at the university.
The Students' Union offers a list of confidential and honest external groups that can give you advice and support for drug and alcohol issues.
You may also want to reach out to the university’s Student Wellbeing Service.
Ebooks are available via the online library on Addiction - Drugs, Alcohol and Gambling – see this reading list.
See also the Student Services list of useful contacts (500k pdf).