Zephyr 101

nRF9151 Feather, trouble building samples
init repo error
STM32F4 UART Async API losing bytes
STM32F4 disco and Async UART
MCUBoot For NRF5340 not updating
Zephyr OS boot log removal
tracker app SUPL credential installation
SMS Sample program nfed/samples/sms
mfw_update sample app fails
Zephyr LSM6DSO32 Sample
PATH setting for Zephyr Tools: Setup
NB IOT WITH MQTT non Secure.
Zephyr Pinctrl Driver for BGA package SOC
Trouble linking boot_write_img_confirmed
Over The air update
aws_iot Sample App - advice
using the integrated soc nrf52840 on the nrf9160 dk
IR 38Khz Example
Seeking a Zephyr out of tree sensor example that works with nRF SDK
Please explain about workspaces for a dummies and non-native English speaker.