Learn Odoo as beginner

Odoo is one of the best open source Enterprise solution over the world. and it is growing very fast. there are lots of jobs regarding odoo development.
lots of company are providing effective Odoo solutions to their clients. if you want to learn a odoo must have following knowledge.

• Basic knowledge of Python 
• Basic knowledge of OOP
• Basic knowledge of Query/PostgreSQL
• Basic knowledge of XML
• Basic Knowledge of MVC architecture
• Precise Analysis Skill

If you have this skills you can do the Odoo Development. here are some of the Reference/Link to learn the basics.

Python:
Interactive Python Learning -> http://www.learnpython.org/
Pdf to learn Python -> files.swaroopch.com/python/byte_of_python.pdf (In my training period I have refered this book to learn python. Thank You swaroop for amazing book.)

OOP:
Link to learn basic OOP concepts -> http://www.introprogramming.info/english-intro-csharp-book/read-online/chapter-20-object-oriented-programming-principles/
http://www.codeproject.com/Articles/567768/Object-Oriented-Design-Principles

Query: 
Basic of SQL queries ->  http://www.w3schools.com/sql/
Postgres Basics -> http://blog.trackets.com/2013/08/19/postgresql-basics-by-example.html
http://www.postgresqltutorial.com/

XML: 
Basic XML tutorial -> www.w3schools.com/xml/

MVC architecture:
MVC for beginners -> http://www.codeproject.com/Articles/620195/Learning-MVC-Part-Introduction-to-MVC-Architectu