The first time you play WoW after you load Trinity, Trinity starts up in config mode. In config mode, you cannont press keys or click buttons and have them do anything. This is by design. There are tooltips if you mouse over the Trinity button on your minimap that explain how to turn on/off config mode. Also, if you hit escape to bring up the main options menu, you'll see a Trinity 2.0 button near the bottom of the menu. If you open up the Trinity options menu from here, you'll see that there is a knowledge base or faq style of help system.

Trinity has a lot of features and that makes it somewhat complicated to setup. Once you get the hang of how things work, I think you'll find that it is fairly well thought out. I'm at work now, so I can't open up Trinity to give you a step by step guide on how to create a new bar. There is a create button on one of the config screens. This is how you make a new bar. Trinity refers to them as docks. The screenshots of Trinity at www.wowinterface.com shows the config screens.