update README

README.md

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 # exploring_aws_IoT
 My study notes from the course: https://www.udemy.com/course/exploring-aws-iot
+
+## Getting setup
+
+To use the Sketch with the ESP8266 board
+
+- Arduino IDE 1.8.19
+- ESP8266 Community Version 2.7.4 [https://github.com/esp8266/Arduino/tree/2.7.4]
+- PubSubClient Version 2.8.0 [https://github.com/knolleary/pubsubclient/tree/v2.8]
+
+Python files haven't dependencies. use a 3.4+ version.
+
+### ESP8266
+
+For each Sketch you must configure the WiFi credentials:
+
+```
+const char* ssid = "<YOUR-WIFI-NETWORK>";
+const char* password = "<YOUR-WIFI-PASSWORD>";
+```
+
+the EndPoint:
+
+```
+const char* awsEndpoint = "YOUR-ACCOUNT-ID-ats.iot.YOUR-CERTIFICATE-REGION.amazonaws.com";
+```
+
+and the certificates:
+
+```
+certificate.pem.crt
+private.pem.key
+```
+
+all this data must be confirmed on the AWS IoT platform
+
+### Python
+
+To use the python script you just need to add the data, example:
+
+```
+$python main.py --endpoint YOUR-ACCOUNT-ID-ats.iot.YOUR-CERTIFICATE-REGION.amazonaws.com --cert ../certificate.pem.crt --key ../private.pem.key --topic outTopi
+```
+
+### Bash
+
+....
+
+## Project Base
+
+- [AWS-IoT](https://github.com/sborsay/AWS-IoT)