To quickly install dmd within your user directory, run:
curl -fsS https://dlang.org/install.sh | bash -s dmd
Packages for various distributions are provided:
Besides the DMD reference compiler which uses its own backend, there are two other compilers that can be fetched through the dlang.org download section:
GDC and LDC aren't always at the most recent DMD frontend's versions, but provide better optimization levels as well as support for other platforms like e.g. ARM.
See the wiki for more information
The beauty about D is that you don't need a fancy IDE as boilerplate code is very rare. However, using D is nicer when you are in the comfortable zone of your favorite editor. There are D plugins for at least the following editors:
You may also want to try an IDE dedicated to D: