You can already improve the quality of information you will work with simply by choosing the right search engine. Common search engines (Google, Seznam.cz, Yahoo, etc.) offer in the search results links to websites with content of varying quality. The number of results may be so high that finding quality information can be difficult. Google Scholar (http://scholar.google.com/) on the other hand searches through research articles, academic books and websites of research institutions. This gives you a higher certainty of finding websites with high-quality information.