DD has a deferred place to study next year (awesome); and is now working and planning her travels once she has saved (also awesome). However she is going to study Maths in September 2026, and I wondered if anyone else whose young adult did this, did any of the free online courses to stay agile in maths! There are quite a few online courses, but any rips of resources or ways other students have managed a year out of studying a stem subject would be appreciated. would coding be a good thing to get started on?