The first training guides below teach you the essentials for Android app development.

This might seem superfluous—if the default for an affirmative option is to not do something, then why provide a way to explicitly turn it off?

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Here you'll find training classes that describe how to accomplish a specific task with code samples you can re-use in your app.

Classes are organized into several groups you can see at the top-level of the left navigation.

If you do not understand the difference between these notations, or do not know which one to use, just use the plain ordinary format you use with your favorite browser, like Since Wget uses GNU getopt to process command-line arguments, every option has a long form along with the short one.Long options are more convenient to remember, but take time to type. Unless stated otherwise, it is assumed that the default behavior is the opposite of what the option accomplishes.Various online video courses are also available if you'd prefer an interactive video experience.This file documents the GNU Wget utility for downloading network data.A copy of the license is included in the section entitled “GNU Free Documentation License”.These two alternative forms are deprecated, and may cease being supported in the future.