Hi begsy,
You can find the vsdk documentation in C:\NXP\VisionSDK_S32V2xx_RTM_1_1_1\s32v234_sdk\docs\ folder.
You can start with:
- docs\vsdk\S32V234-EVB_SetupGuide.pdf, Section 3.3 Running the applications via Linux OS - how to setup the evaluation board
- docs\vsdkVisionSDK_ProgrammingExamples.pdf - how to write a Hello World application
- docs\nbuild\NBUILD_UserGuide.pdf - how the build system works
You can find info about APEX programming in the docs\apex folder.