I suppose you're asking for how to model/texture a ped, in which case you can Google for 3ds max tutorials and check the Tutorials forum
(also check the Tutorial Forum List
when doing so) for rigging a ped for SA.
Come back and make a topic if you have specific problems regarding modelling or require assistance. Most people will assume that you already have basic knowledge of an area when asking for help so please take up your own time to browse for basic tutorials on the web if you have not already done so.