Go to an university of your choice and order a library card. Then research your topic. But here's the problem: You might must spend a bit of time to find valuable literature. The advantage: you read a lot and gain knowledge, which you can compare. There are also standard works on a particular topic, look for that. The politically biased Problem is important. Always look who wrote the book, where does he/she come from, does he/she engaged in certain society topics etc.