Solid State
Bravais lattices, packing efficiency, density formula. BITSAT loves "glass properties" and FCC vs BCC density questions.
Lock this in. Memorise z = 1, 2, 4 for SC, BCC, FCC by heart.
Pick a module on the right to start. Tick the circle next to each module as you finish it; the day completes automatically when all modules are done.