Noteefi requires MongoDB and Python3. Regarding installation of MongoDB please see Here
Installaion of Python dependencies
sudo apt-get update sudo apt-get -y install python3 python3-pip sudo pip3 install requests websocket-client
Noteefi communicated with steemd, so make sure you are running steemd on your local server (if you want to connect public ws server, you may want to edit the code
ws = create_connection("ws://127.0.0.1:8090")).
To obtain the telegram bot token, please see Here