See individual directories for specific build notes. All but vmgr will run on either an unexpanded Commodore 64 or Commodore 128 in 64 mode, or on an Apple IIe, IIc or IIgs with at least 64K of memory. Pre-built example binaries are available from the Releases tab.
It is recommended you start with the Hello, World example and proceed alphabetically, since each succeeding example increases in complexity.