As a member of an indie team I'm interested in knowledge on how to organize the team and improve work efficiency. Can you guys recommend any good learning sources (books/articles/lectures)? Ones covering how to distribute tasks, group the development team into smaller working units and gather data to improve the performance of individuals.

Thanks in advance!

A few ideas, thanks to the pop-up ads that appeared beneath your post:

Project Management for the Unofficial Project Manager

Project Management: A Quick Start Beginner's Guide

Project Management: Proven Principles in Agile Project Management

Project Management for Dummies

I also recommend you read up on agile development, and get The Game Production Handbook and The Peter Principle and The Mythical Man-Month and Parkinson's Law. 

Thank you for the answer! I'll check those out.