The most important phase of writing is "research". It is the first & the foremost task in writing. It is not possible to write intelligently on a topic on which your knowledge is limited. To learn more about the topic of interest, you need to read the resources.
Read it carefully!
When an individual conducts research, they must move from lighter resources to the detailed ones as it's the right direction. The internet is the biggest resource of self-learning. Familiarize yourself with the basic concepts & ideas, and move to the solutions and further relevant study on a higher level. Do not limit yourself to internet only; you need other resources as well for better understanding.
Write it Down!
As you read from the resources, keep a piece of paper along with you, to write down the important points. Make sure that you do not forget to write the source details accurately. It might help you at the time of referencing in your content. If you have printable sources then you may highlight the important details on the paper for further understanding.
Read more but take less!
When you are reading one of the resources, most of the details seem relevant to you, and you begin to feel like including a lot from it. However it is not a good practice. When you write an essay, it must be like a general practice to write my essay. If you will be taking others ideas and making them as yours, then it is plagiarism. You may use the resource to refer a concept, idea or theory.