The discussion centers on finding resources for performing calculations with tensors using modern notation. A recommended textbook by @Orodruin is highlighted for its comprehensive chapter on tensors, along with other relevant topics. Participants express interest in modern formulations of differential geometry, particularly for applied calculations rather than theoretical proofs. The conversation touches on the distinction between mathematicians' approaches, such as Cartan theory with differential forms, and physicists' use of Ricci calculus, noting the advantages and disadvantages of both methods. The mathematicians' approach is praised for its formal developments and simplifications in certain calculations, while the Ricci calculus is favored for its straightforward handling of components and real functions.