I would begin by reading all the stickys here on the site; especially the ones in the nutrition and beginners section. A lot of the questions that you are asking can be found there. Supplements that I BELEIVE are essential are: fish oil, a quality protein powder and a good multivitamin...that is all a beginner needs. Some people use more, others use less. A supplement will not do the work for you, so bear this in mind. You can research the supplements that you would like to purchase, as there are a wide variety, and thus can vary in price. I myself use optimum men multivitamin and Gold Standard Whey, and Flameout (found here at T-Nation/store).
CT wrote a fantastic article on Superhero Complexes, which is similar to the type of workout that may interest you. I used them awhile back while cutting and saw great results. Although it is difficult to follow it to tee if you don't have the proper gym for it. As some days you may be occupying 2 different squat racks or multiple stations. I only say "may" because seeing as you are completely "new" to weightlifting, it may be a little advanced. A lot of the movements are big, multi-jointed and will take some time to develop proper technique. That being said, learning the movements will yield great benefits as you develop, and will reap the fastest rewards. You can do search on this site, and I'm sure you will find the link.
That all being said, being 5'1 at 210, and relatively new to weightlifting tells me that you are carrying a significant amount of body fat. Diet will be key in transforming your physique, and thus can not be overlooked. I would begin by cutting all liquids from your diet that are not H20. Cutting out all refined sugars, limiting carb sources to only around your workout period and upping your vegetable intake while you adjust to your new LIFESTYLE. If you want to get real technical; start counting calories and macros. You can find a calculator to find your Basic Metabolic Rate(search on Google), and SLOWLY put yourself in a caloric deficit. Start with a 300 caloric deficit, and record your results adjusting when necessary. I emphasize the word slowly, because if you start at too sharp of a deficit you will lose muscle, and damage your metabolism.