Where you should look for information is defined by your information need. The following chart shows different information needs with suitable information-retrieval channels that will often turn up useful information sources.
|What you are looking for||=>||Where to find it|
|A certain book||=>||Search for Helsinki University Library collections:
Other libraries: Finna.fi.
|A certain article||=>|
|E-journals by topic||=>||Search for Helsinki University Library collections:
|Theses||=>||University of Helsinki theses:
Theses from other universities: Finna.fi.
|You need new information about a certain subject quickly, but you do not need to chart everything that has been published about it.||=>||Helka database or the open web e.g. Google Scholar.|
|An overall mapping of everything that has been written on the subject||=>||