One way to think of the radius of a sphere is as the distance between the point at the center of the sphere and any point on the surface of the sphere. Because this is true, if you know the coordinates of the point at the center of the sphere and of any point on the surface, you can find the radius of the sphere simply by calculating the distance between the two points with a variant of the basic distance formula. To begin, find the coordinates of the sphere's center point. Note that because spheres are three-dimensional, this will be an (x,y,z) point rather than an (x,y) point. This process is easier to understand by following along with an example. For our purposes, let's say that we have a sphere centered around the (x,y,z) point (4, -1, 12). In the next few steps, we'll use this point to help find the radius. Next, you'll need to find the (x,y,z) coordinates of a point on the surface of the sphere. This can be any point on the surface of the sphere. Because the points on the surface of a sphere are equidistant from the center point by definition, any point will work for determining the radius. For the purposes of our example problem, let's say that we know that the point (3, 3, 0) lies on the surface of the sphere. By calculating the distance between this point and the center point, we can find the radius. Now that you know the center of the sphere and a point on the surface, calculating the distance between the two will find the radius. Use the three-dimensional distance formula d = ((x2 - x1)2 + (y2 - y1)2 + (z2 - z1)2), where d equals distance, (x1,y1,z1) equals the coordinates of the center point, and (x2,y2,z2) equals the coordinates of the point on the surface to find the distance between the two points. In our example, we would plug in (4, -1, 12) for (x1,y1,z1) and (3, 3, 0) for (x2,y2,z2), solving as follows: d = ((x2 - x1)2 + (y2 - y1)2 + (z2 - z1)2) d = ((3 - 4)2 + (3 - -1)2 + (0 - 12)2) d = ((-1)2 + (4)2 + (-12)2) d = (1 + 16 + 144) d = (161) d = 12.69. This is the radius of our sphere. In a sphere, every point on the surface of the sphere is the same distance from the center point. If we take the three-dimensional distance formula above and replace the "d" variable with the "r" variable for radius, we get a form of the equation that can can find the radius given any center point (x1,y1,z1) and any corresponding surface point (x2,y2,z2). By squaring both sides of this equation, we get r2 = (x2 - x1)2 + (y2 - y1)2 + (z2 - z1)2. Note that this is essentially equal to the basic sphere equation r2 = x2 + y2 + z2 which assumes a center point of (0,0,0).
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One-sentence summary -- Find the (x,y,z) coordinates of the central point of the sphere. Find the coordinates of a point on the surface of the sphere. Find the radius with the formula d = ((x2 - x1)2 + (y2 - y1)2 + (z2 - z1)2). Know that, in general cases, r = ((x2 - x1)2 + (y2 - y1)2 + (z2 - z1)2).

If you currently have friends on a particular server, then joining them could make the game much more fun. Alternatively, if you have a friend who plays the game but would be open to creating a character on a new server, ask them which of your last server options they would like best. If you're still undecided, you can opt to pick a server with an appealing name. For instance, some players may prefer being on "Thrall" over "Khaz'gorath" because of the simplicity of it. If you are familiar with World of Warcraft lore, you may choose the name of a character or place you are fond of.
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One-sentence summary -- Join a server where your friends are playing. Select a server because of its name.

You will need a solid business plan to present to any investors and the best place to start would be with determining your basic cost of operations. This will outline and help you determine how much money is needed to produce the product or offer the service you intend to offer or produce. It includes production costs, shipping, taxes, worker's wages, rent for workspace, etc. Knowing your cost of operations will be vital to determining if your business will be profitable, since you will need to make more than this baseline in order to remain in business. Be realistic. How many people will realistically use your business? How much will they pay to use your services? If either number is too small in comparison to how much it will cost you to stay in business, then you should reconsider or change your plans. You will need to plan ahead for all of the problems which can get in the way of running a business. Evaluate your competition; if their market share or product offering is too strong and stable, then you will have a very hard time breaking into the market. No one will want to buy an equally priced or more expensive version of a perfectly good product or service which already exists. You will also need to explore the associated regulations and laws, especially regarding taxes. You should ask your local state authorities, as well getting information from the IRS. Make sure there are no prohibitive costs, such as equipment which is too expensive to make the business profitable. For example, cars didn't take off until Ford figured out how to make them cheap by building more efficient equipment.
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One-sentence summary --
Determine your cost of operation. Determine your potential market. Determine impediments.