This set of tutorials takes you through how to model a human character using blueprints obtained from the-blueprints.com which you only need to signup for free to access lots of useful blueprints and reference images for 3D modelling and other forms of art. The blueprint i use in the tutorial can be found here.

Part 1 - Scene Setup and modelling the legs

Part 2 - The Torso

Part 3 - Adding Arms

Part 4 - Changing the proportions to fit my own style choice