Have you ever dreamt of attending MIT to study physics or engineering? MIT have been generous enough to put much of their learning materials on the internet for FREE! Some of the courses have downloadable videos of actual lectures.MiKTeX
LaTeX is free software for the professional layout of scientific documents that is used widely in universities. The link above is for a version that will run under the Windows operating system. It makes it easier to produce documents containing a lot of mathematical equations. There is a bit of a learning curve but it is worth it if you are considering entering a career in research. There is also an editor called LEd available that makes it a lot easier to produce documents using LaTeX.New Scientist
Keep up to date with the latest breakthroughs and jobs in science
PhysicsAmerican Institute of Physics
The University of Cambridge, UK, have provided some excellent resources for studying materials science.