I've made this intro-to tutorial with some starting information base don what's possible with VisualEditor in 2015. Currently VE has a few limitations so this tutorial will hopefully need to be updated in the coming years as features are added. Current main limitations:
Not possible to designate a table as sortable
Not possible to colour cell backgrounds (or any HTML attributes)
Tables inserted from a .CSV are not formatted as class="wikitable"
Not possible to move a row or column (must delete then re-insert)