The Spectrum Pocket Book is another new book which can be recommended. It is more general than the previous book in the series, which was for the ZX-81, and includes a large section on machine code, which shows, among other things, how to print on to the screen using a machine code program and the Spectrum ROM.
There is also a full assembler program, disassembler and machine code monitor. It provides much useful information on the internal workings of the machine.
It is ideal both for the first-time users and a user who has had some previous experience. It costs £4.95 and can be obtained from Phipps Associates.