learning
Fluvial Geomorphology - free e-learning from the Environment Agency - http://e-learning.geodata.soton.ac.uk/EA/
This resource is from the Environment Agency and Southampton Uni. Primarily aimed at river managers, it provides an introduction to fluvial geomorphology which users may find helpful.
View animations and diagrams that will show you how the three different kinds of rocks are formed. A very good introductory site to the world of Geology
GeologyRocks