Best Linux Cheat Sheets - https://www.nixtutor.com/linux/all-the-best-linux-cheat-sheets/
Common Linux Commands - https://www.pixelbeat.org/cmdline.html
Beginner's Guide to Scripting - https://www.howtogeek.com/67469/the-beginners-guide-to-shell-scripting-the-basics/
Shell Scripting Tutorial(shellscript.sh) - https://www.shellscript.sh/
Linux Shell Scripting Tutorial(freeos) - https://www.freeos.com/guides/lsst/
SVN Tutorial(TutorialsPoint) - https://www.tutorialspoint.com/svn/
Subversion Basics(Apache) - https://openoffice.apache.org/svn-basics.html
SVN for Beginners - https://www.howtogeek.com/66731/version-tracking-with-subversion-svn-for-beginners/
SVN Tutorial(deveo) - https://deveo.com/svn-tutorial/
SVN Crash Course(for Git Users) - https://git.or.cz/course/svn.html
Mercurial - https://www.mercurial-scm.org/
Mercurial for Beginners - https://stackoverflow.com/questions/1170338/mercurial-for-beginners-the-definitive-practical-guide
Git - https://git-scm.com/
Git Reference - https://gitref.org/
Git(The Simple Guide) - https://rogerdudler.github.io/git-guide/
Git Tutorial(Atlassian) - https://www.atlassian.com/git/tutorials/what-is-git
Git Cheat Sheet - https://www.git-tower.com/blog/git-cheat-sheet/
Start Learning iOS Development with Swift - https://developer.apple.com/library/content/referencelibrary/GettingStarted/DevelopiOSAppsSwift/
Swift(exercism.io) - https://exercism.io/languages/swift/about
Obejective-C - https://exercism.io/languages/objective-c/about
Developing Android Apps(Udacity) - https://www.udacity.com/course/developing-android-apps--ud853
Best Resources to Learn Android Programming - https://theprogrammersworld.blogspot.ca/2014/05/best-resources-to-start-learning-android-programming.html#.VHWStCPI9ok
Xamarin - https://developer.xamarin.com/guides/android/getting_started/
Meet Android Studio - https://developer.android.com/studio/intro/index.html
Install Android Studio - https://developer.android.com/studio/install.html
Building Your First App - https://developer.android.com/training/basics/firstapp/index.html
Java Tutorial(TutorialsPoint) - https://www.tutorialspoint.com/java/index.htm
Java Quick Guide - https://www.tutorialspoint.com/java/java_quick_guide.htm
Java(exercism.io) - https://exercism.io/languages/java/about
Getting Started with Android and Kotlin - https://kotlinlang.org/docs/tutorials/kotlin-android.html
Try Kotlin - https://try.kotlinlang.org/#/Examples/Hello,%20world!/Simplest%20version/Simplest%20version.kt
Kotlin Resources - https://kotlin.link/
Kotlin(exercism.io) - https://exercism.io/languages/kotlin/about
C++ Tutorial(cpluscplus) - https://www.cplusplus.com/doc/tutorial/
C++ Tutorial(TutorialsPoint) - https://www.tutorialspoint.com/cplusplus/
C++ Tutorial(programiz) - https://www.programiz.com/cpp-programming
Learn C++(learncpp) - https://www.learncpp.com/
C++ Reference Guide - https://en.cppreference.com/w/
C++(exercism.io) - https://exercism.io/languages/cpp/about
C Programming - https://www.cprogramming.com/
C Tutorial(programiz) - https://www.programiz.com/c-programming
C Tutorial(TutorialsPoint) - https://www.tutorialspoint.com/cprogramming/
Learn C - https://www.learn-c.org/
Intro to C Programming - https://www.le.ac.uk/users/rjm1/cotter/page_01.htm
C Programming Tutorial - https://www.iu.hio.no/~mark/CTutorial/CTutorial.html
XML Tutorial(w3c) - https://www.w3schools.com/xml/
Android UI Layouts(TutorialsPoint) - https://www.tutorialspoint.com/android/android_user_interface_layouts.htm
Getting Started with XML Layouts - https://code.tutsplus.com/tutorials/getting-started-with-xml-layouts--mobile-12749
Google XML Style Guide - https://google.github.io/styleguide/xmlstyle.html
Welcome to Python - https://www.python.org/
Python for Beginners - https://www.python.org/about/gettingstarted/
Google's Python Class - https://developers.google.com/edu/python/
The Python Tutorial - https://docs.python.org/3/tutorial/index.html
Learn Python(The Python Guru) - https://thepythonguru.com/
Learn Python(LearnPython) - https://www.learnpython.org/
C# Programming Guide - https://docs.microsoft.com/en-us/dotnet/csharp/programming-guide/index
C# Tutorial(TutorialsPoint) - https://www.tutorialspoint.com/csharp/
C#(exercism.io) - https://exercism.io/languages/csharp/about
Dart Language - https://www.dartlang.org/
Dart(Reddit) - https://www.reddit.com/r/dartlang/
Dart for Beginners - https://dart.academy/dart-computer-programming-for-beginners/
Go(exercism.io) - https://exercism.io/languages/go/about
Go Language - https://golang.org/
Go Tutorial(TutorialsPoint) - https://www.tutorialspoint.com/go/
Go Programming Language(Google+) - https://plus.google.com/+golang
Maven Tutorial(TutorialsPoint) - https://www.tutorialspoint.com/maven/
Spring Guides - https://spring.io/guides
Spring Tutorial(TutorialsPoint) - https://www.tutorialspoint.com/spring/spring_overview.htm
Spring for Beginners Tutorial(YouTube) - https://www.youtube.com/watch?v=rMLP-NEPgnM