In all tutorials the steps to be performed by the user are marked by a dot. If you only want to get a quick idea how to work with amira you may skip the explanations between successive steps and just follow the instructions. But in order to get a deeper understanding you should refer to the text.
Note: If you want to visualize your own data, please first refer to Section 4.1. This section contains some general hints on how to import data sets into amira.