As with most information resources nowadays there is a massive amount of information and one can easily get stuck trying to decide what is genuinely helpful. Hopefully some of the resources below may help.

The Senate House Library has a curated selection of books and pamphlets on the Fourth Floor reception area. There is also a wide collection of online resources here:

https://www.london.ac.uk/about/services/senate-house-library/collections/senate-house-library-wellbeing-collection#bame-support-18261

Futurelearn has a wide variety of MOOCs. https://www.futurelearn.com/subjects/psychology-and-mental-health-courses/mindfulness-wellbeing

Of particular interest may be this course: Managing your Wellbeing When Studying in the UK