Select 'On Demand', you have to create
an account but it's free and you don't need to be a Tableau customer.
The tutorials are selected into few groups Intro, Advanced, Chart
Types, Server. It's the best place to start learning.
Check 'Live Online' out too.
Tableau's Knowledge Base – hundreds of tutorials
are divided by topic.
Each short tutorial gives answer to a
problem, it's good to check the titles and do tutorials which can be
useful in your work. The list look like a never ending story but no
reason to be in stress as most of things you will learn doing 'On
Let's analyse a situation, you have a data set and you have something, what looks like the matching shape file, you think cheerfully that the data set will fit to the shape file like a hand to the glove. Unfortunately, life isn't so easy. Some shape files aren't updated regularly, it is common that administrative districts with low population density are joined to the neighbouring districts. It is worth to compare the number of districts in your data sets with the shape file. If you see any gap, try to find information about changes, so you will know which districts should be merged.