The Summer Student's Reference Guide

Computing

Python

• A basic tutorial, written as part of the Python documentation. This is actually a very nice tutorial and reference guide at the same time.
• "Invent Your Own Computer Games with Python", an e-book that teaches how to program by making games.
• Another nice online tutorial on the same style as the previous.

ROOT

• The ROOT user's guide

ROOT and Python Hands-On exercises

• Some start-up exercises

ATLAS

• An ATLAS review, a few years old but a great summary. The first chapter provides a good overview of the ATLAS detector.
• The ATLAS Run Query, the most complete ATLAS data taking database.

SUSY

• A Supersymmetry Primer, a complete guide to SUSY.