The New Study dialog opens automatically when you bring a design into the simulation workspace for the first time. You can also open the dialog with the New Study command on the toolbar.
The New Study dialog provides icons with labels to represent each analysis type. As you switch between the different icons you will see an image of a result, and a brief description of that study type.
The dialog also has a Help Deciding section that provides a drop-down menu of statements about what the outcomes from each analysis type. For example, "I want to see the temperature distribution throughout my design when it is heated or cooled" is the statement for a thermal analysis. When you select the statement that describes your desired outcome the graphic and description of the analysis type updates. Selecting OK creates the analysis type that is selected.
You can set the analysis settings here by clicking the Settings icon in the upper right corner of the large thumbnail image. More information about the Settings dialog can be found here. The settings can be applied later on, if desired, from the Manage portion of the toolbar.