MongoDB can also be easily downloaded by visiting the official MongoDB website and accessing the Downloads section at http://www.mongodb.org/downloads.
Depending on the version of MongoDB you downloaded, you will want to replace
<version> in the following sections with the appropriate version number that matches your file.
Once there, be sure to download the correct version depending on your OS and CPU (32 or 64 bit). You should have determined this in the previous steps when you downloaded and installed Node. For Windows users, you can opt to download the MSI installer file, which will make installation much simpler.
After completing the download, open and extract the contents of the
.tgz file. You will want to move the extracted contents to a
/mongodb destination folder. You can do this either via the Finder or the command line, whichever you prefer.