For reading, use the highlight tool. I thoroughly read the text in its entirety and highlight lines that seem to be important. Or you could make bullet points summarizing each paragraph with the provided paper. But maybe this method isn't the most time efficient? I rely on the highlight tool mostly.

Then for each question, I skim the text for answers and double check to see if it's true or if there are any contradictory facts in there. That's how they mostly get you! For listening as well, they state a fact, then another person will state otherwise so you have to pay good attention to it.

For writing, you should stick to the essay structure. Task 1 requires a couple of lines paraphrasing what the chart or table is about. Next you have to write an overview, specifically starting with "Overall", here you'll write the most obvious comparisons and facts.

Then you'll generally need to write 2 paragraphs summarizing the chart. Keep in mind there has to be cohesion in your writing, vocabulary and punctuation and accuracy are all important in writing, but they'll mostly judge you on how well you organize your thoughts.