Knowing how to check the quality of the information you have found (a process known as 'critical appraisal') is quite a challenge but an important skill to develop. If you need to very quickly find some web based information that has already been checked for its quality by subject experts, you can use a specific type of search engine called a subject gateway.
The Library has a list of subject gateways which covers a variety of subject areas.
You can use the search field to search for information in a similar way to a standard search engine.
For more precise results you can select a specific subject area that you are interested in.