Yes. Basically, Pure Vanilla Extract is the bean infused in alcohol; Pure Vanilla Paste is the bean scraped down added to extract with sweetener added (has the consistency of syrup rather than a paste ; and Pure Vanilla Powder is the dried bean ground. Paste can be used 1 to 1 for extract; Powder 1/4 teaspoon = 1 teaspoon Extract; and 1 Vanilla Bean = 1 teaspoon Vanilla Extract.
It depends on what you are making as to when the extract is added. If the wet ingredients are not being cooked, (like in a cake mix) the vanilla extract is added with the wet ingredients and mixed before baking. If however, the wet ingredients are being cooked (like for pudding) the extract is added once you have removed the pan from the heat and mixed in.
Hope this helps. Thanks; Virginia