INPUT ARTICLE: Article: Go to File>Open and choose the image you wish to open.

SUMMARY: Open Preview. Use Preview to open your image. Click the "Select" drop-down menu. Choose the "Instant Alpha" button. Click wherever you want to erase the background. You will notice that part of your picture turns red. Drag until most of your background is red. When you have most of the background selected, hit the "Delete" key. This won't erase all of the images background, but it should get most of it. Now it comes down to personal preference on which tool to use to clean up the rest of the background.

In one sentence, describe what the following article is about: At the company you work for, you will have a specific job role and this is how you make the company money. If you can't do your job well, you will lose customers and you may become a liability, meaning that you lose the company money. To ensure you do your job well, you must learn how to do it to the company's standards. Learn from other employees, get a mentor, enroll in training courses and be eager to learn as much as you can. The results you get at work are ultimately what you will be judged on.  This is the most important part. The whole reason the company employs you is to perform in this job role. Do it correctly and do it well. Self-improvement and networking are important, but if your performance slips because of them, you won't be doing yourself any favors.  Think about the company's return on investment (ROI) on you. How much money are you making for them in relation to your salary? Doing so will help frame your contributions and help you find ways to increase your measurable value. Organize your tasks from most critical to least. When you've determined the most important 20 percent of your tasks, mark them separately from the rest. Spend the majority of your time and effort working on these, leaving the others to be completed quickly when you need to. This will allow you to do your best work on the most important tasks, rather than spreading yourself thin over both critical and non-critical tasks. Valuable employees don't stop working when the clock strikes five o'clock. If you have work to do on a project, stay later and get what you can done after hours. When you go home, bring your work with you and get it done around family time. Always be ready to respond to after-hours emails as well. This extra effort will get you noticed as a hard worker.  Understand that this work is not overtime, which requires additional pay, but simply additional work with no expectation of additional pay. Going the extra mile should also apply to the quality of your work. Some people do a good job and leave it there, whereas others will offer to do extra. For example, some employees will offer to mentor, train new employees and suggest more efficient working procedures. Consider organizing charity and social events that bring company employees together and contribute to the community. Doing so will improve your reputation and the reputation of your company at the same time. Companies often want their workers to be "self-starters," and for good reason. Employees who see problems and take the initiative to fix them save their bosses time and work by not waiting to be asked to fix that problem. Don't ask for approval before starting additional work or carrying out a customer request; just do it. If you have an idea of something that could add value to the company, approach your manager about it. A valuable employee is one that can be counted on to consistently meet and exceed the demands of their position and managers. Provide reliable work and consistently meet your deadlines to gain the reputation of being a responsible employee. Responsibility also extends to your mistakes. When you mess up, own it by admitting the error and taking responsibility, then immediately working to find a solution. Overall, work to gain a reputation as someone your employer can count on.
Summary: Exceed expectations. Prioritize tasks. Go the extra mile. Become a self-starter. Be responsible.

INPUT ARTICLE: Article: Cutting down a tree is no small feat, and before you start, you need to wear the right protection. Always wear a logger's helmet, earmuffs, a face screen, safety glasses, thick gloves, and Kevlar chaps.  A helmet protects you from falling branches, earmuffs and a face screen protect your face and ears, and safety glasses keep the dust out of your eyes. Kevlar chaps stop chainsaws the instant the bar hits your leg. Most trees are taller than you think and can reach farther on the ground than initial estimates. By using the "axe handle trick," you can determine how far the tree is going to fall.  Hold your axe vertically at arm's length and close one of your eyes. Either walk toward the tree or back away from it until the axe is even with the treetop and the bottom even with the base. Your feet should be located where the treetop rests after falling. Add 1 to 2 feet (0.30 to 0.61 m) of extra room just to be safe. Although many crepe myrtles won't be tall enough to pose serious damage, some can reach up to 33 feet (10 m). For these trees, cut away any brush around their trunk using garden shears and lay out two escape routes on the side of the tree. Each escape route should be around 45 degrees from the other in opposite directions. Think of the felling direction as the bottom line of a capital "Y", and the two top lines the escape routes. Before cutting down the tree, look out for loose branches, dead branches that are still attached, and buildings, fences, or power lines that are in the felling zone.  Loose or dead branches should be removed prior to cutting. Determine which direction the tree is leaning by looking for the side with the heaviest load/branches. If your felling zone contains buildings, fences, or power lines, stop here and call a professional. Using an axe, make a notch cut that is 1/5 of the way into the tree’s trunk. The bottom cut should be 30 degrees from the horizontal plane, while the top cut should be 60 degrees from it. The notch cut will be the direction the tree falls.  Always start with the top cut. If you meet the top notch perfectly when making the bottom cut, the wedge will drop out. If you don't, you will have to extend the cuts from the top or bottom to let the wedge drop free. Your felling cut should be level with the apex of your notch. Draw a line with a piece of chalk connecting both sides for a guide.  Once the tree begins to lean, pull your saw free, hit the saw's chain break, and move to one of your escape routes. Keep your eye on the tree so that you can properly react if it falls in a way that conflicts with your plan.

SUMMARY:
Wear the proper safety gear to protect yourself. Estimate the felling zone using an axe. Cut a way for two escape routes using garden pruners. Examine the tree for potential problems. Create a notch cut using your axe. Cut the tree horizontally with a chainsaw using the apex as a guide.