| 2000206 | Introduction to Simulation Techniques on the Sinclair QL | Sinclair QL | English |
| 2000207 | Introduction to Superbasic on the Sinclair QL | Sinclair QL | English |
| 2001425 | Introduction to the Z80 Microcomputer | - | English |
| 2000209 | Invent and Write Games Programs for the Spectrum | - | English |
| 2001270 | Inves Spectrum+ Guia de Funcionamiento | - | Spanish |
| 2000210 | Island of Secrets | - | English |
| 2000587 | Jeux et Casse-Tete a Programmer | - | French |
| 2000810 | Jogos e Desenhos no TK90X Vol 1 | - | Portuguese |
| 2001182 | Jogos e Programas para o Spectrum | - | Portuguese |
| 2001476 | Jogos em Linguagem de Máquina | - | Portuguese |
| 2001480 | Jogos em Linguagem de Máquina Vol. 2 | - | Portuguese |
| 2001481 | Jogos em Linguagem de Máquina Vol. 3 | - | Portuguese |
| 2001121 | Joysticks: Eine Illustrierte Geschichte der Game-Controller 1972 - 2004 | - | German |
| 2000713 | Juegos Matematicos de Ingenio en BASIC | - | Spanish |
| 2000524 | Jupiter ACE: FORTH Programming | Jupiter ACE | English |
| 2001456 | K Power: Computer Craziness | - | English |
| 2001457 | K Power: Computer Monsters | - | English |
| 2001458 | K Power: Computer Olympics | - | English |
| 2001459 | K Power: Computer Space Adventures | - | English |
| 2000749 | Katalog Programa za ZX Spectrum | - | Serbian |