Helpful Resources

Learn more about Nipype

Nipype homepage: This is the best place to learn all you need to know about Nipype. For beginner's, I recommend to check out the Quickstart section.
Beginner's Guide: This beginner's guide is an in-depth step by step tutorial to Nipype.

fMRI 4 Newbies: A crash course in brain imaging.
Neurostars.org: If you have any questions about Neuroinformatics, this is the place to go!
Design efficiency in FMRI: A nice and detailed guide on how to design a good fMRI study.
Questions and Answers in MRI: This is a great resource for anybody who wants to understand MRI and the physics behind it a bit better!

Aya Ben-Yakov put together a very nice and comprehensive list of various tools and resources about open and reproducible science.

A Byte of Python: A very nice introduction to Python in general.
A Crash Course in Python for Scientists: a very good introduction to Python and scientific programming (e.g. Numpy, Scipy, Matplotlib)
Codecademy - Python: An interactive online training and introduction to Python.
Learn Python the Hard Way: A very good step by step introduction to Python.
Python Scientific Lecture Notes: A very good and more detailed introduction to Python and scientific programming.
If you're looking for a Python based IDE like Eclipse or MATLAB, check out Pycharm or Spyder.
Programming with Python: This short introduction by software carpentry teaches you the basics of scientific programming on very practical examples.

Got 15 minutes and want to learn Git?: Github's own git tutorial. It's fun and very short.
Git Real on Code School: An interactive tutorial about GIT
Top 10 Git Tutorials for Beginners

the Unix Shell: If you're new to Linux, here's a quick starter guide by software carpentry that teaches you the basics.