If you're new to philosophy you need to learn how to analyze arguments. If not, how will you know what arguments are any good? Also, you'll need to know some basic epistemology, that is, what it means to have knowledge. After all it's knowledge that we're after, not someone's opinion. Opinions are a dime a dozen, and you'll find lots of them on these forums. It's going to take a lot of work if you want to make any progress. Good Luck.

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