AND – AND memory with AC.
TAD – Two's complement add memory with AC.
ISZ – Increment and skip if zero.
DCA – Deposit to memory and clear AC.
JMS – Jump to subroutine.
JMP – Jump.
IOT – Input Output Transfer, control peripheral.
OPR – Bits control shifting, skipping, clearing, incrementing etc.
Probably too much information to really learn. Intended to give a feel for instruction set.