There are a couple of things to consider, regarding the creation of a Title in PrE.
When one creates a New Title, it appears in two places: on the Timeline, where the CTI (Current Time Indicator/Playhead) is located, and on a Video Track above any Clips already at that location, and also in the Project Panel. Initially, the Title also opens in the Titler (the little Title editing application in PrE).
With that Title on the Timeline (in Timeline View Mode), one would just Dbl-click on it, to open it in the Titler Panel, to edit it.
Now, if one has many Clips on several Video Tracks, then the Instance of that new Title might appear on a higher Video Track, that it not readily seen, unless one scrolls the Timeline vertically, to reveal the Video Track, where it is located.
Note: that same Title can be used many times, but each is but an Instance of that Title, so any editing done to it, will affect ALL Instances of that Title. To create a new Title, based on that Title, but not linked to it, choose Duplicate Title.
There is also a tutorial on creating and editing titles in my free 8-part Basic Training tutorial series.
Your questions are pretty basic. These tutorials might well answer most of them. And my book will certainly answer the rest with step by step instructions, if you're interested.