You can find example.config.py file with WiFi name and password. Please create new one config.py file with your credentials.
MicroPython docs you can find here
In order to erase your esp please use this esptool.py --port /dev/ttyUSB0 erase_flash
Here you can find a most recent generic firmware. Please download it. Rename it firmware.bin and move it to the folder where you can easily find it
In order to flash your ESP run this script in a folder with firmware
esptool.py --port /dev/ttyUSB0 --baud 460800 write_flash --flash_size=detect 0 firmware.bin
You can use PyMakr extension for Vs code or any other tool
Use this scrip to connect via cmd:
picocom /dev/ttyUSB0 -b9600
ESP started a HTTP server which you can find in http_server folder. Please be aware that you should be connected to the same WiFi. After server is started you can go to an IP which you can find in logs
network config: ('192.168.0.104', '255.255.255.0')
In public folder you will find an html document which is served