Why won't my nikon d3100 take pictures on auto mode?

I've tried to change the settings and for some reason it will only take pictures on manual mode. Some people have told me it's locked on manual but I don't really know what that means or how to fix it. Can anyone help? I'm new to this camera, I've got it yesterday.
>>> Why won't my nikon d3100 take pictures on auto mode?

How to fix my Nikon lens? - 1

I have the Nikon D3000.My mom accidentally dropped the camera and now one of the flat small bars on the bottom that holds the lens to the camera broke and only half of it is left on.Is there any quick fix i can use? I'm going away in a day and I'll need to use the camera. Any advice? I'd like to avoid taking it to a repair shop.
>>> How to fix my Nikon lens? - 1

What kind of camera should I ask for?

I want to get into photography.So I'm going to ask for a camera for the holidays. Probably either a nikon or a canon. I don''t really know anything about cameras, all i know is that i want something that takes excellent clear pictures. And one of those cameras that looks really nice and professional but handheld. I'm not exactly sure how much they go for but probably nothing really over $250.So if you could list some links and prices to cameras that are kind of what im describing or cameras that i should look for would be great, thanks!
>>> What kind of camera should I ask for?

I deleted a photo on my digital camera how can i recover it?

I have a nikon d5100
I deleted a photo by mistake
Any FREE program to recover it?
Also, i took photos with my camera after i accidentaly deleted the pic.
Is it gone forever? :(
Pls help
>>> I deleted a photo on my digital camera how can i recover it?

What are the key factors in deciding what DSLR to buy?

I'm thinking of buying a nice DSLR and I need to know the main things that make a good camera. Things like megapixels I know but apart from that, what do Canon and Nikon do which are good buys?
>>> What are the key factors in deciding what DSLR to buy?

Nice DSLR cameras for beginners?

I'm getting a DSLR tomorrow, and I have $1000 to spend. I wanted a Nikon D90 at first, but refrained from saving up to $1300. What are some nice cameras under my budget? I don't have many specific qualities I'd like, just a camera that takes nice pictures. Thanks!

Side note: I'm just going to get a camera with a kit lens. Nothing special!
>>> Nice DSLR cameras for beginners?

Camera decision help!

Im buying my first camera, im also in high school so i have a maximum budget of 500$, so as of right now im torn between the Sony Nex 5n vs the Nikon D5100. I know the Nikon has a wider variety of lenses but does the 5n have the upper hand in low light quality? Since im a beginner which would be better suited for me ?
Added (1). If you know of a better camera within that price limit, let me know
>>> Camera decision help!

What are some techniques I could use to take Jacob Riis-style photos?

I'm having trouble with a photography project. The equipment I have available is a Nikon d60 with a DX Nikkor 18-55mm lens, an AF Nikkor 70-300mm lens, a tripod, and a grey card.
>>> What are some techniques I could use to take Jacob Riis-style photos?

Best suitable camera?

Im just a beginner or intermediate photographer..im looking for a decent camera preferably of nikon, canon or sony..compact digit cameras wud do for me and inspite of tight budget..i can manage upto 200$!!i just want good picture quality and a cam capable of indoor photography!! any suggestions wud b welcomed!!5x-10x zoom wud b enough for me..i dont want very large zoom range!! i want good pocture quality..thats all..with some gud retouching options! Cheers!
>>> Best suitable camera?

Canon camera or Nikon camera?

I'm about to buy a $500 camera from either canon or nikon. Which one is better? (clearer photos)
Added (1). I like to take pictures of EVERYTHING, mostly people though.
>>> Canon camera or Nikon camera?