TED Talks are about "ideas worth spreading." Part of this means you should be emotionally invested in what you plan to speak about. Planning a talk on something you're enthusiastic about will motivate you in the planning and refining of your TED Talk and will carry through to your audience when you deliver it. You don't have to be the world's foremost expert in your topic, but you do have to know enough to give accurate information in those areas where you have expertise and to seek out experts and peer-reviewed sources for any material where you're not an expert yourself. Your TED Talk should be focused on the needs and interests of your audience. Look for places where your audience's passion matches your own and build on those, as well as taking the following into account: Your idea should be something your audience hasn't heard before, or at least not in the way they've heard it presented before. Your idea should be a realistic one, something that your target audience can put into practice or be able to get the right people in their personal networks to put into practice. Once your idea is something you can relate to your audience and have them relate to you, you have a premise for your talk. Your premise should be one you can state in one or two sentences. You may have to revisit your idea several times to define your premise clearly. TED Talks currently are no more than 18 minutes in length. You do not have to use the full 18 minutes for your talk; some ideas can be stated succinctly and completely in 5 minutes or less. You can't go over 18 minutes, however. If you're given a shorter time limit when asked to speak at a TED event, use that time limit instead. You're not looking to copy the style of a particular speaker, but to get an overview of possible styles to find what feels right to you. Look at several TED Talk videos in areas similar to what you plan to talk about, as well as videos in areas that interest you that may be outside what you plan to talk about.< While the TED Talks in general are about sharing ideas, your TED talk will share your idea primarily in one of three ways: Education. These TED talks inform the audience about the world around them. Topics often include the biological, physical, or social sciences, as well as information on new technologies and inventions and how they will impact the listeners' lives. The speakers for these talks often have advanced degrees in one of the sciences, but not always. Entertainment. These TED talks often cover the creative arts, whether it be writing, art, music, or performing, and delve into the process behind the art. Inspiration. These TED talks seek to elevate their audience's perception of themselves and the world around them, to think about things in new ways, and to apply that knowledge to their lives. Many of the speakers of this type of TED talk use their own experiences as examples to others.
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One-sentence summary -- Choose a subject you're passionate about. Choose a subject you have expertise in. Evaluate your topic for your audience. Define and refine your premise. Know your time limit. Review several TED Talk videos to develop an understanding of the format. Determine the primary purpose of your TED talk.

Provided your shopping list is well-organized, you should be able to tell at a glance which items may be found in which aisles. Do a methodical sweep of the store. Go through the most important aisles first, and make sure you have all of the things you need before you move on. Try to cross off your shopping list categories (i.e.: fresh vegetables) at a time. Shopping are made easier if you go at times when the supermarket isn't as crowded. Late nights before closing are perfect for this, as well as weekday mornings when most people are busy working. In contrast, it's not recommended you go shopping during the weekend or in the early evening if you can help it. The supermarket will be busier and you'll spend more time wading through the foot traffic. Cloth grocery bags are a useful touch if you want the best shopping experience. You will save on the added fees for plastic bags, and cloth bags are more durable. Using cloth bags to shop with is also environmentally friendly, so you can feel good about yourself while you shop. When you're buying food items, it's a smart idea to make a habit of checking the expiry date. This is especially important for things with a short shelf life such as milk. If there are multiple copies of an item available for purchase, check a few of them and pick whichever one has the latest expiry date. You should leave room on your shopping list for improvisation. In-store specials are worth exploiting if it's something you would have wanted anyway. Although your shopping trip shouldn't be dictated by what's on special, taking advantage of these opportunities is a great way to make the most of the money you spend. If your shopping trip is going to be fairly in-depth, you'll want to count for the time the frozen grocery items will be out with you. Frozen products like ice cream shouldn't be kept out of frozen storage for too long unless you want a mess on your hands. If you think the shopping trip is going to take a while, aim to have these frozen foods picked up last.
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One-sentence summary --
Plan out your trip by aisle-type. Go shopping during off-peak hours. Use cloth grocery bags. Check the expiry date. Keep an eye out for in-store specials. Get frozen foods last.