There's lots of modeling tutorials on this site most of them are for paying members but we do have some free ones as well here
For modeling there's the glass jug (which Jay made), modeling a room and also Mike's introduction to game texturing where he models a brick wall and makes a normal map. If you're a beginner you should be able to pick up a lot of useful things in these tutorials.
We're also adding some more free modeling tutorials to the site later this week that should help you out a bit, and we'll have competitons where you can win video credits to download our tutorials. For competitions even if you're a beginner it's a great way to learn because you can get feedback and help from guys like Jay who are really good in this field, and with some effort you sometimes realise that you can do more than you think on your own