[Christian]

If I remember correctly it comes with the perspectives "due", "completed", "flagged" and "contexts".

"due mimics things' "today" list in a way. It lists all those tasks and projects which are due either today or "due soon" which means they will be due within a timespan you can set to your liking. It also lists overdue tasks (the red ones from things). Having not only due today but also due soon means more flexibility. Say you have done all tasks due today. You will still see those due, for example, in two days, and can already start working on them. In"due" you also find your flagged tasks.

"flagged" holds, as will have guessed, those tasks that you marked as flagged. If what those flags mean is up to you. You can assign them to especially important tasks or, if you like, you can make this your "today" perspective and manually sort actions into it by flagging them.

"contexts' lists all your available tasks sorted by the context you assigned. Handy if you want to take a quick look what is still left on your plate and which place/tool/mindset is required to work on them.

"completed" are obviously tasks that you have checked off. Useful to check if you have actually already completed a task or if you had use forgotten to note it down.

As has already been said, access to a mac and the free 30 day version would be all you need to create customised perspectives. If you need assistance with setting those up you will find help here.