Java WatchService tutorial

The Watch Service was introduced in Java 7 as a “thread-safe” service responsible for watching objects for changes.
The most popular use of this API would be to use it as way to monitor a folder of files for changes such as: addition of new files, deletion of files, file renames, etc.

Read more here.

Book References

1. Javascript / JQuery
  - 4 best JavaScript or JQuery books for beginners

2. Ruby
   - 6 Best Books for Learning or Advancing your Ruby Knowledge
 

Mastering MEAN: Introducing the MEAN stack

MEAN stack is today's favorite development technology stack (previously was LAMP) for web developers. Here is and entry point tutorial for those that are interested.

More resources:

1. http://mean.io/
2. Rails to MEAN

MIT video lectures and material

For those that never had the chance to graduate from MIT here is an online resource of video lectures from almost all courses.

Those that want to jump start from computer science you can start from here.

thinkster.io

Thinkster.io is another great online learning center. Try it out

Eloquent JavaScript

A nice online intro to javascript here

Codecademy

Codecademy is a neat on line learning center.