How do I begin a new veg/heb garden in an already estabished gardening bed?

I just bought a house with great gardening beds. The only issue is I'm new to gardening and would like to get rid all the plants currently growing there to add new ones. I'd like to pot the rosemary instead of having it on the bed because it seems so invasive. The tomato plants seem to be done for the season. Do I pull them? There are also strawberries, thyme, and others I have no idea what they are.