severe library problems when trying to use standard code

I am very new to Bluetooth and nRF. However, as i am trying to learn and work on a prototype i can't even get the basic sample codes to run. One of two big problems I'm having is that I'm missing what seems to be all Zephyr/Bluetooth libraries. For example, I'm missing the following from trying to run the Bluetooth peripheral example. 

#include <zephyr/sys/printk.h>
#include <zephyr/sys/byteorder.h>
#include <zephyr/zephyr.h>
#include <zephyr/types.h>
#include <zephyr/bluetooth/bluetooth.h>
#include <zephyr/bluetooth/hci.h>
#include <zephyr/bluetooth/conn.h>
#include <zephyr/bluetooth/uuid.h>
#include <zephyr/bluetooth/gatt.h>
#include <zephyr/bluetooth/services/bas.h>
#include <zephyr/bluetooth/services/hrs.h>
every single one comes back with the error "cannot open source file"
My other problem is that even if I break it down to the point of basic c code allowing a button to turn on and off LED1 when i go to build it I get this error
FATAL ERROR: command exited with status 1: 'c:\ncs\toolchains\v2.1.2\opt\bin\cmake.EXE
along with whatever specific path file to my c file.
to be clear I followed the video tutorial exactly, I then installed cmake through there tutorial. It seems to me that in the installation video then i followed exactly (twice after a reinstall) these libraries came up fine but mine are immediately underline with red. and the cmake fatal error i cant find anything related to this from other forums. 
Please help! and than you i have the boardnRF52840-DK
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