Use this section as a sequence rather than a shopping list: start with resources that sharpen translation and critical method, then add English, modern-language and Oxford-specific material that gives you something precise to discuss.
For critical method, Literary Theory: A Very Short Introduction is a compact route into questions about language, meaning, identity and interpretation.
For English study, This Is Shakespeare models argumentative reading of canonical drama. The Art of Fiction gives short chapters on narrative technique, useful for naming what fiction is doing.
For Oxford-specific material, the University of Oxford channel includes admissions, subject and interview-related material. Oxford Modern Languages gives subject-specific language and culture material, while the Faculty of English, University of Oxford provides English Faculty talks and lectures.
For audio resources, Great Writers Inspire offers short talks on major writers. Oxford Comparative Criticism and Translation is a strong fit for the overlap between English, modern languages and comparative literature.
For structured study, Approaching literature: reading Great Expectations models different ways of reading a major English novel. Modern & Contemporary American Poetry is centred on close reading and discussion of challenging modern and contemporary poems.