You will need a go-kart frame that is capable of housing the size and weight of your engine. Most 5 to 7 horsepower engines will fit a standard size kart. The vertical shaft engine you choose can be from a riding mower or a push mower, either will work for your go-kart. Larger engines in the 13 to 22 horsepower range, which you can find on riding mowers, may destroy the transmission or kart. You will want one that can support both your vertical shaft engine and lawnmower gearbox comfortably. Your gearbox should will need to have non-trans axle set-up. This will give you a better sense of the dimensions that will be comfortable for your frame. Most frames have a width that varies between 1/3 and 2/3's the wheelbase of your go-kart, with wider models giving better stability.
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One-sentence summary -- Measure the size of your engine. Pick a suitable go-kart frame. Draw out a true to size basic design of your frame with chalk.

Q: Mistakes can help you learn, but only if you make sure they are corrected. For example, if you use the wrong ingredient while cooking, be sure to ask your mother or a knowledgeable person about the correct way to use the ingredient, so that you can revise the information in your memory. It can be helpful to write down when, where, and how you're making mistakes in your life. This will create additional awareness of your patterns, which may be difficult to notice in the heat of the moment. Carry a small pocket journal around with you and make note of times that you did something wrong. Review the entries later when you have free time, and explore options for what you could have done differently.  For example, if you're working on a new recipe and things keep going poorly, make a note of where you're messing up. Think about it later that evening and see if you can come up with ways to prepare the dish differently. You should also keep track of your successes. You will be more motivated to continue learning despite making mistakes if you can track your progress over time and celebrate what you're good at. A solely negative focus is unhelpful. “Be-good” goals set unrealistic expectations for yourself, especially if you're just starting out with an activity. If you set “be-good” goals, you are raising the stakes and telling yourself that you need to succeed in order to be a good person. “Get-better” goals, on the other hand, are all about improvement. With these goals, you don't need ridiculously high achievements in order to feel good about yourself. You're aiming for improvement, not perfection. For example, focus on the “get-better” goal of learning how different spices affect the taste of food, rather than the “be-good” goal of being a master chef right off the bat. Time isn't the only ingredient necessary to learn from your mistakes. You will also benefit from going forward with a specific purpose. This is why it's important that you locate your mistakes and the reasons behind them. Being aware of what you're doing wrong, and why, will help you create a plan to practice and increase your competence. For example, if you're trying to perfect a basic cooking skill like boiling pasta, do it over and over until you get the timing right. It may take a while to get the desired softness of the pasta, but the more you practice, the closer you will get. There's no shame in asking for help with something you haven't gotten the hang of yet. Putting your ego aside and learning from someone who has more experience than you is a great way to improve, especially if you find yourself in a rut and don't know how to proceed. For example, ask a chef at your favorite restaurant or a family member with a lot of cooking experience if you are having trouble with a cooking basic. Research suggests that people who believe they can learn from mistakes are actually more likely to learn from mistakes. Knowing that it's possible for you to learn from mistakes is a good step toward actually doing it. After a mistake such as burning a dish, tell yourself “I can learn from this. It’s possible to use this experience. Now I know to use a lower oven temperature.” We’re told not to make excuses for our mistakes, but that's different from knowing about the reasons for our mistakes. If a meal you are cooking doesn't come out right, it's okay to recognize the fact that you made a mistake such as not following the recipe closely enough or reaching for the salt instead of sugar. That's a reason, not an excuse. Searching for the reasons behind your mistakes can help you do better in the future, because it will show you where you went wrong. Some more reasons to look out for:  Being late to events because of not getting up early enough. Getting written up for messing up a project because you didn't ask for clarification. Failing a test because you neglected to study, or didn't prioritize your studying well. Sometimes all it takes to learn from a mistake is one pass. This isn't always the case, however. Many times, in order to learn from a mistake, we have to make it several times over. It can be difficult to catch on at first, so give yourself leeway to make the same mistake a few times before getting frustrated.
A: Correct your mistakes. Keep a journal of your mistakes and successes. Focus on “get-better” goals rather than “be-good” goals. Engage in deliberate practice. Ask for help. Believe in your abilities. Know that reasons are not the same as excuses. Give yourself time.

Article: Obviously a Nerf gun is pretty critical, but dark clothing and knee pads/elbow pads and some leather gloves work great to get you into the spirit of things. What about binoculars and sunglasses? Why not? Popular varieties of Nerf guns include:  The Rapidstrike The Centurion The Elite Stryfe The Vortex Diatron It helps to be able to run around a little bit, so you should be in shape and ready to move. If you can outrun your assassins, you'll be in good shape to come out on top. Even the super-expensive varieties aren't necessarily the most accurate toys out there. If you jump into the game without practicing, you're going to wait for the perfect opportunity to eliminate someone and misfire and end up out of the game and feeling dumb. Practice shooting at cans and other targets to get a sense of how your Nerf gun behaves.
Question: What is a summary of what this article is about?
Get the gear. Learn to move with your gear. Practice a bit with your Nerf gun.

Article: If you suspect that someone has a broken foot, it's important that he receives medical treatment to assess the severity of the break and devise a treatment plan. A doctor can ensure that the diagnosis of a break is correct and that the pain in the foot is not caused by another condition. At the hospital or doctor's office, your practitioner will conduct a series of examinations and tests, most likely including an X-ray of the bones in the foot.  An X-ray will show whether the bone is fractured severely or if it only has a hairline fracture, or if there is no fracture at all. The X-ray is the only way to definitely know that the foot is fractured, unless it is so severely broken that the fractured bone can be felt with the hands. Depending on the severity and location of the break, your doctor will advise a treatment plan to minimize further injury and promote healing of the bones.  For a very minor break, this might just involve keeping the foot elevated and avoiding bearing weight on it until the bone is healed. A more severe break may require an air boot or cast.  Some very severe breaks may require surgery and/or the placement of metal plates in the foot to repair the break.
Question: What is a summary of what this article is about?
Head to the emergency room. Get your foot X-rayed. Follow the treatment plan.