Sometimes it helps to plan your search if you set out your information or questions in a diagrammatic form..  These are just a few different ones you may like to use
A Research Web
 Put your topic in the circle. (for example: Arctic animals)
 On each line put a fact or area of study for your topic. (For example: polar bears, arctic fox.)
 Under each line put facts you find.

An Endangered Species  web

An Arctic web

A Spider Map

 

A Concept Map
In a concept map a webbing technique is used to connect ideas

A Fishbone Map
(To show the consequences of an event)