I did the same, but with an Oric Atmos (6502). It came with an amazing manual, which I've recently had another look at. It taught BASIC, character graphics, mac

I did the same, but with an Oric Atmos (6502). It came with an amazing manual, which I've recently had another look at. It taught BASIC, character graphics, machine code, binary and how negative numbers are represented, memory addressing, addressing modes, registers, and the instruction set, explaining each instruction, the machine's memory map, ASCII, lists of binary, hex and decimal conversions and tables of op-codes, ROM routines with call and return parameter registers, circuitry of the machine, and a decent index. I think I learnt more about computers from that book than from any other.