conda create -n web python=3.6.5

source activate web

conda install -c conda-forge flask, flask-wtf, flask-sqlalchemy, flask-bcrypt, flask-login, pillow , flask-mail

File -> Settings -> Project Intepreters -> Look at: Project Interpreters --> Show All

--> Click: Plus -> Choice: Conda Environment --> Click: Existing Environment 

--> Choice path to: ../miniconda2/envs/web/bin/python    (3.6.5)

Choice: Edit configurations (right side - it's blur) --> Click: Plus (left side)
--> Choice: Flask Server --> Rename Flask Server -> Choice Working Directory to: your project directory 
-> Choice Target to: absolute path to your app.py file.

Click run your flask server -> Go to: 127.0.0.1:5000 (or: localhost:5000)  --> You have to see: Hello world

render_template:    Use to render our template
url_for:            Use to find the static url (input is: name of function handler)
flask-wtf:          Use for form 
flask-bcrypt:       Crypt password and check hash password
flask-login :       Help check user login
pillow :            Resize image (large --> small)
flask-mail:         For email send