Google
As we know life without Google search is not possible. So we should have some knowledge about Google search.
Most of the times people claims "Google produce irrelevant result, irrespective to their search". So this is the solution to their problem. You could restrict your Google search to the stuff you want, and even can directly search the stuff you want. Try this article to make Google search strict to your search and save your time.
1. Great Google Secrets - Ristrict google to search only to the stuff you want
2. Search free books directly by this Google Search
3. Search Direct FTP links of stuff like movies, songs, games , appz, etc
4. Google for Rapidshare links
5. Google for Torrent - Direct link to Torrent you want