Nikon D3000 Speedlight Flash?

I want a flash for my D3000. I've just bought a Yongnuo YN460.It appears that the camera doesn't 'know' there's a flash on top as it tries to deploy the built in setting. Also, there's no TTL mode on teh flash, what disadvantage is that? Thanks

Added (1). Would something like this help with the settings situation, i.e. Not having to fiddle with everything?

http://www.ebay.co.uk/...1025597197

also, the Aperture dominant setting seems to be ok as I understand that the best, so letting the camera automatically do the shutter speed seems ok.

I'm using the camera just for messing aroud with friends, so not for anything professional, just taking fun, decent pics really

Added (2). I'vw seen in a few places this table for aperture/distance, my flash doesn't have one… It also doesn't have a setting for changing the sync speed. It has a power level output and thats the only thing you can vary on the actual flash. Hmm, this thing seems to suck:/ lol. I've just got it in Aperture dominant setting and chaning to f number accordingly really, seems to be working fine, much nicer than with the built in flash

You might need to turn the camera to full manual…

Don't shoot in Auto mode. Use one of the PASM mode (program, aperture, shutter, manual). This will keep the built-in flash from popping up.

Since your flash doesn't support TTL, you need to shoot in manual mode, just like the old days.

TTL has been a standard feature of external flash units for decades.

Trying to go "cheap" and spending less than $50 for a flash (which is rarely used in reality) is false economy.

Unless you have a lot of experience using a flash unit in the full manual mode and making exposures based upon the guide number of the flash and the distance to your subject, just return the flash and save your pennies for a nice Nikon SB flash (around $200 for a good used SB600) which is dedicated for use with your D3000

Yes, you would have to fiddle with this flash-camera combination. With flash, use the camera in Manual mode and the flash in Auto or Manual mode. It's actually easy. Set the camera to the fastest flash sync speed. If you don't know what it is, 1/125 is safe enough. Set flash to Auto mode and set it to the ISO on the camera. It would be best if you used ISO 100 on both. Estimate distance between you and your subject. See the back of the flash for the suggested aperture size for the range of distance in your estimate. Set that aperture size to your camera. Take one shot. If too bright, raise f/number a bit. If too dark, lower f/number a bit. That's it!