Not only do you want to evaluate the quality of your sources for Currency, Relevance, Authority, Accuracy, and Purpose, you also want to ask yourself - are they helpful to your research task?
Reflect on your process so far by asking yourself the following questions:
What have I learned so far?
What could I argue with this information or what will be my claim?
What additional information do I need to make a focused argument?
Should I abandon some of these sources and/or find new ones?
What are some new concepts, keywords, or subject terms I'll use to find additional information?
What databases and other sources have I tried so far? What additional sources should I try (check back with Step 2)?
Evaluating your sources well requires reading with a critical lens. Ask yourself questions such as these:
Am I reading facts that are presented to inform? Or am I reading an argument designed to persuade?
If an argument, what is the author's claim and what evidence/data is used to support the claim? What analysis/reasoning/warrant is used to convince readers, either through logic or emotion?
How has the author's background influenced his/her perspective?
What other sources corroborate this information? What other perspectives need to be included?