Amiga RKRM Includes and AutoDocs Amiga ROM Kernel Reference Manual - Includes And Autodocs - 3rd Edition
Amiga RKRM Devices Amiga ROM Kernel Reference Manual - Devices - 3rd Edition
Amiga RKRM Hardware Amiga ROM Kernel Reference Manual - Hardware - 3rd Edition
Commodore Business Machines Amiga Intuition Reference Manual
Amiga OS3.1 Workbench Amiga OS 3.1 Workbench
Tripos and Amiga DOS tripos and Amiga DOS manuals. Notice the comparisons
Commodore Amiga Book Amiga DOS Developers manual, Revision 1 (1985-08-27)
Amiga DOS Amiga DOS command examples
Commodore Amiga Book: Amiga Users Guide to Graphics Sound and Telecommunications (1987)
Compute Amiga machine language programming guide
Abacus Amiga System Programmers Guide
Mapping the Amiga Mapping the Amiga
The JForth manual is the first place to go to learn Forth, but if you wish to explore elsewhere, to broaden your horizons, then there are plenty of other Forth books both in archive.org, as well other locations. There are also many online tutorials. Also search for Forth on YouTube.
Below are some highly recommended books.
Starting Forth By Leo Brodie.
Thinking Forth By Leo Brodie. A Language and Philosophy for Solving Problems
Thinking Forth By Leo Brodie.
Exploring Forth By Owen Bishop
Forth Programming By Leo Scanlon.
An Introduction to Forth By Paul Kail.
Forth has always been able to embed Assembler using CODE and END-CODE. So for optimization and faster execution, it can be easily added and is worth learning.
Below are some highly recommended books.
Amiga Assembler Insider Guide An Introduction to 68000 Assembly Language Programming on the Amiga By Paul Overaa
Mastering Amiga Assembler By Paul Overaa
Total Amiga Assembler By Paul Overaa
68000 Assembly programming for the The Commodore Amiga (500) chibiakumas - multi platform assembly, but lot's of Amiga examples
Devpac 3 User Manual
Programming the M68000 By Tim King and Brian Knight
Amiga Assembler Pro By Peter Schulz
Assembler Base English By Adam Zalepa
Assembler One V1.2 Manual By Rune Gram-Masen
This site, Amiga Source Preservation has a wealth of Amiga books.
As Does Archive.org
Also look at the JForth 'Links' web page. JF-Linked