Problem: Article: The Facebook icon looks like a blue box with a white "f" in it. If you’re not automatically logged in, log in with your Facebook account. You will have to enter your email or phone number and your password. This button is located in the lower-left corner of your screen, and it looks like your Home screen page. You can use the search function, or click on your friend’s name on your Friends List or News Feed. This button looks like three dots and it's right below your friend's profile picture. This will take you to a new page showing you and your friend's mutual friends, posts on each other's walls, and photos together. This button is at the bottom of the Photos window. Tapping on it will bring up a list of all photos that you and your friend are tagged in together. If you don't have many photos together, you will not see this button. Instead, you will see thumbnails of all of your photos together. Tap on a photo to zoom in.
Summary: Open the Facebook app. Tap the Home button. Go to your friend’s profile. Tap ••• More. Tap See Friendship from the menu. Scroll down and tap See All Photos.

Problem: Article: There are multiple companies online that exist solely to collect data on you and then sell it to marketers. These sites take public records, social network information, browsing information, and more to create a profile about you that they can sell. Opting out of these lists can be time consuming and difficult. Several sites have lists of the companies that collect data, as well as information on how to remove yourself. This typically involves emailing and calling the company until you reach someone who can delete your information. This can be a very time-consuming and frustrating process, as many of these companies purposefully make it difficult to remove yourself. There are services available that will delete your records from listing sites. These services essentially perform the same functions that you can do for free, but take care of it for you so that you don't have to spend your time trying to track down sites and people to talk to. These services are often subscription based. This is because even if you remove yourself from a list, you will often be placed back on it after a few months. These services repeat the deletion process every few months to ensure that you stay off the lists.
Summary: Find a list of data collection sites. Remove yourself from the lists. Pay to have your data deleted automatically.

Problem: Article: Once you've memorized your perfect squares, finding the square roots of imperfect squares becomes much easier. Since you already know a dozen or so perfect squares, any number that falls between two of these perfect squares can be found by "whittling away" at an estimate between these values. To start, find the two perfect squares your number is between. Next, determine which of these two numbers it is the closest to. For example, let's say we need to find the square root of 40. Since we've memorized our perfect squares, we can say that 40 is in between 62 and 72, or 36 and 49. Since 40 is greater than 62, its square root will be greater than 6, and since it is less than 72, its square root will be less than 7. 40 is a little closer to 36 than it is to 49, so the answer will probably be a little closer to 6. In the next few steps, we'll narrow our answer down. Once you've picked out two perfect squares that your number is between, it's simply a matter of whittling away at your estimate until you reach an answer you're satisfied with — the farther you go, the more accurate your answer is. To start, pick a "tenth place" decimal point for your answer — it doesn't have to be correct, but you'll save time if you use common sense to pick one that's close to the right answer. In our example problem, a reasonable estimate for the square root of 40 might be 6.4, since we know from above that the answer is probably a little closer to 6 than it is to 7. Next, square your estimate. Unless you're lucky, you probably won't get your original number — you'll either be a little higher than it or a little lower. If your answer is too high, try again with a slightly smaller estimate (and vice versa if it is too low).  Multiply 6.4 by itself to get 6.4 × 6.4 = 40.96, which is slightly higher than original number. Next, since we over-shot our answer, we'll multiply the number one tenth less than our estimate above by itself and to get 6.3 × 6.3 = 39.69. This is slightly lower than our original number. This means that the square root of 40 is somewhere between 6.3 and 6.4. Additionally, since 39.69 is closer to 40 than 40.96, you know the square root will be closer to 6.3 than 6.4. At this point, if you're happy with your answers, you may want to simply use one of your first guesses as an estimate. However, if you'd like a more accurate answer, all you need to do is pick an estimate for your "hundredths place" that puts this estimate between your first two. Continuing with this pattern, you can get three decimal places for your answer, four, and so on — it just depends how far you want to go. In our example, let's pick 6.33 for our two-decimal point estimate. Multiply 6.33 by itself to get 6.33 × 6.33 = 40.0689.  Since this is slightly above our original number, we'll try a slightly lower number, like 6.32. 6.32 × 6.32 = 39.9424. This is slightly below our original number, so we know that the exact square root is between 6.33 and 6.32. If we wanted to continue, we would keep using this same approach to get an answer that's continually more and more accurate.
Summary:
Find non-perfect squares by estimating. Estimate the square root to one decimal point. Multiply your estimate by itself. Continue estimating as needed.