It is always a good idea to start by asking your teacher or professor if they have some example that they can share with you. Ideally you need to see a collection of different grades of essays that are example of essay outline formats, so you will get to know what the pit falls are and how to avoid them.
If your teacher is not able to share with you or has limited examples then your next move will be to start looking on line. Using a search engine that is linked to academic work, decide on the key words that you will use. Remember to make a note of the order in which you use these words. You need to do this because if you decide to take a break and search for something different then unless your browser or back button works really accurately you may end up with a different set of suggestions when you return to the task.
You could go to your school library where the Librarian may be able to find some useful examples for you. The Librarian may even be able to direct you to some very useful websites. If you are having a bit of difficulty starting your work or understanding what you need to do then try and get an appointment with one of the Learning Support Tutors. You will need to book a time with them well in advance as their department can get very busy especially towards exam time.
Have a look at several of the web sites that are suggested. Some of the websites may offer some free examples that you can download and keep for reference. If you also look for homework websites they may be able not only to give you some examples they may also give you some very good instructions on how to develop your own ideas. Make sure that the sites that you are downloading from are offering a free service. Some websites ask for payment for examples.
Another really good idea is to visit some of the many sites that have recently sprung up that provide “how to videos”. These videos are not only very informative you can also play them over and over again so you get a really good opportunity to develop your skills. These videos are usually developed by professors or students that are keen to share their skills.