Another tip, make sure you learn how to manage widget switchers. If you’re looking for the kind of tabbed browsing you’re probably used to creating in either PHP modifications (wordpress etc.) or HTML5, widget switchers will be an easy way for you to get into a similar style of navigation in UMGs.
Essentially you nest all of the widgets and the order in which they appear is automatically their index # in an array. Then you create buttons that switch the visibility of each indexed item. Fast to learn and will take care of most navigation needs.