I am using veritas STOP method for RC and it's quite helpful :
The information that you need to get from your initial reading can be summarized by the acronym STOP:
• Scope: From your initial reading you should understand the boundaries of the passage, and specifically how those boundaries relate to the primary purpose.
• Tone: From your initial reading you should understand whether there is tone in the passage. This relates specifically to the type of passage, of which there are three on the GMAT:
o Explanatory/Descriptive. The goal of these passages is simply to provide information and/or describe situations or historical events. There will be no purposeful tone in these passages.
o Analytical. The goal of these passages is to analyze some event, theory, and/or information. There is no overt tone, but the passage is not completely objective and will contain some suggestive tone.
o Opinionated/Presenting a Hypothesis. The goal of these is to present an opinion and/or a hypothesis. There will be clear and overt tone in these passages.
• Organization: From your initial reading, you should understand broadly the topic of each paragraph and recognize any important transitions in the passage.
• Purpose: From your initial reading, you should understand the primary purpose of the passage. Primary purpose relates directly to both scope and tone.