Madrigal user's guide (How do I access Madrigal data?)

There are two basic ways to access Madrigal data - through a web browser, or through a programming language such as Matlab or Python. This user's guide consists of a tutorial on using the web interface, and a tutorial and a reference manual for remote data access. The last section also documents some command line interfaces into Madrigal, some of which only run locally on the Madrigal server, and some of which can be run remotely.