Q.flower beds
I just moved into a house with flower beds along the house that are dried out and filled with weeds. I would like step by step directions to make the flower bed healthy and start planting flowers! Do I need to place a tarp below the soil to control roots? Thank you!

If you want to start from scratch, it will certainly give you the edge. You have several options that you can choose as well. These articles will help you with whatever method you use:
https://www.gardeningknowhow.com/special/starting/how-to-build-a-flower-bed-starting-a-flower-bed-from-scratch.htm
https://www.gardeningknowhow.com/plant-problems/weeds/how-to-kill-grass-naturally-kill-unwanted-grass-in-your-yard.htm
https://www.gardeningknowhow.com/special/urban/raised-beds-for-urban-settings-no-digging-required.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/lasagna-gardening.htm