Which Tamron/Nikon lenses will fit my Nikon D3100?

I'm looking to possibly get another lens for my Nikon D3100, so far I have the kit lens (18-55mm) and the 55-200mm lens. I know that my D3100 doesn't have the lens auto-focus motor in the camera body, so the lens will lose the auto-focus if it is not an AF-S.

I'm looking at purchasing a Tamron 18-200mm lens.
http://www.tamron.com/...e/a14.html
http://www.amazon.com/...0007WK8MQ/

Or maybe this type, from Nikon
http://www.amazon.com/...005NFW9PG/

The tamron would be my first choice, although slight more money, I like the zoom versatility.

I'm just wondering how to figure out how to tell which non-nikon lenses have the motor in them, so I will not lose auto-focus.

Just a side note, which is the cheapest nikon dslr with a motor in the body?

Another side note, I'm a beginning hobbyist photographer, basically what camera gear is essential for general photography? I'm leaning towards close up and macro photography right now, however, I want to experiment with it all until I find a favorite. (landscape, portrait, nature, macro… ) Right now I have the 2 aforementioned lenses, a tripod, and a camera bag. I don't want to shell out tons of money yet.

Finally, are there any really good photography books that you could recommend? I like looking through them to get ideas.

You did not check the definitions.

That Nikkor lens you listed is for use on the new Nikon 1 mirrorless cameras, NOT Nikon's dSLR's

I would far rather have a used Nikkor AF-S 18-200 mm lens than any of the third-party lenses. The only third partly lens I would consider are those made by Tokina.

With tamron, click trough to the tamron usa website. Click the specs tab and make sure it says: "Nikon with Built-In Motor"
With Sigma make sure it says HSM. With nikon make sure it says AF-S.

The nikon you linked is for the new 1 series, it will not fit.

Personally I'm not too fond of the tamrons. If you want oodles of zoom for a friendly price and still decent quality.sigma makes an 18-200 OS hsm. If you're not scared of buying used and you want a real bargain, look for a nikon 18-135. Good lens, load of reach and ridiculously cheap because it has no VR.

The cheapest motorized nikon body at this time is the D90, especially if you can find a refurbished one.

Gear wise: Get some cleaning stuff, a rocket blower and a microfiber cloth.perhaps an optech rainsleeve if you spent a lot of time outdoors. For the outdoor photographer a comfortable day pack with room for food and water is also a good investment.

Books. Michael Freeman is one of the few that makes inspirational books in which he talks a lot about composition. Bryan Peterson's understanding exposure is another famous book