In an English Language GCSE paper, it is important that students keep to a strict time schedule so that short and consise points can be made.
In source questions, there are a few marks available, but they can really help set you up for the rest of the exam. They don't try to trick you (the information is always right in front of you), it just takes a few simple skills to identify and, once you have practiced these, you'll find that no question will be an issue.
If you read the articles, which are often news-style pieces, as you would if you were reading a paper, this can really help. It allows you to clearly see what new information you are learning, and ensure you pull quotes from the text. The quotes shouldn't be too wordy, but just a couple of key words can really show the marker that you've grasped what the text is about. Also make sure that you can hit four or five points of equal length - don't get too caught up on one point because you'll put yourself at a disadvantage. If you work your way chronologically through the text you'll also ensure that no points are missed, and therefore demonstrating that you've read the text throughly and at least once through without writing anything down.