If you are not interested in the courses or are not willing to learn them all, then you wouldn't do much justice to the position and might find it difficult in the interview. But if you are interested or willing to learn, then nothing like it. If the interview date is close by, you could do some broad framework readings on the course. If you have time, then you could read the best/popular books and research papers. You could go a step ahead, pick some concepts, and do an in-depth study(discussing it in the interview would be an added advantage). The interview panelists would definitely know you're a fresher, experience and firm grip over the subject is not what they'd be looking for. Rather they would be looking for your knowledge(limited), communication, and interest in the subject. So, if you can communicate your knowledge and express your interest, you should do well. All the best!

Just keep this in mind for next time. You should apply your exit papers and serve notice only when you have received an offer letter from the new firm. A verbal assurance and word of confidence mean nothing in a corporate as long as you don't have them in written form.
Since you're already serving your notice period while you've received a confirmation from the new firm, it is not wrong to nudge them regarding your offer letter. Call or email them and put it across politely. All the best!

Hi, have you some clarity yet? I have a humanities background, so I can't be of much help here. But I have used some assistance in the past which has helped me. You could try dropping your question here - https://www.bartleby.com/subject/math/statistics. Could be helpful

It is indeed a very precarious situation. Try taking a day or two's break, have a digital detox, and/or a nature trek. You could then return and introspect on the matter. The situation demands your thought, action, and slipperiness to get over.

That's true. Give it some more time and follow-up with your supervisor. If you've had a good rapport with the person and have exhibited good research potential, I don't see a reason for a no. Anyways, if there are more certain ways of seeking an answer, you could do that.

You can take a look at Feminist Standpoint Theory, which states that any choice of object of inquiry is influenced by one's standpoint--that is, where one stands in the socio-political world, as well as one's status and standpoint in the material world. It is not as relativistic as it sounds, though. It simply urges people to see the perils of claiming universal objectivity and applicability. They argue that any account/theory can only be partial, which is not a shortcoming since the human world is not so black and white as to be explained with one overarching theory.

There is no one way to do this. I use post-its and highlighters of different colors. I also keep a notebook by my side to note important page numbers (I include a brief summary of why the page is important, which allows me to explicate the most crucial aspect of its relevance). Nothing has helped me more than a notebook. Sifting through it also gives me numerous ideas. But to each his/her own, so all the best :)

Since you'd asked for some linked references, I am including a full PDF version of:
1. History at the Limit of World History (http://abahlali.org/files/Guha_history_limit.pdf)
2. A list of Sociology related texts for your perusal:

You can find much material about Feminist Standpoint theory online. Please look up Susan Hekman and Harding.

Hope these help!

Since you're working in the field of British Studies, I'd suggest examining historiography itself. Modern history is, to a large extent, contains and extends the colonial model of history. It excludes other indigenous forms of history-making. You can examine works that claim fiction can be historiographical. For eg: you can look at the feminist standpoint theory (its stance on fiction) and Ranjit Guha's History at the Limits of World History for starters.