Samsung Digital Camera Functions

just brought a panasonic digital camera today and ive tried taking pictures in the bathroom but whenever i hit the button to take the picture it doesnt want to take the picture but then when i walk out the bathroom and into my room it will let me take a picture in my room but [...]

5x optical zoom; 12-megapixel resolution for photo-quality prints up to 20 x 30 inches
6 months access to ColorMe; enhance images online
AF Tracking technology; choose from three in-camera Magic Filters
2.7-inch LCD; Edit images in-camera; Red-Eye Fix, Lighting Fix, Resizing and Cropping
Capture images to xD-Picture Card or microSD (not included)

Product Description12mp digital camera w/ 5x optical zoom,Image [...]

ISBN13: 9780240521121
Condition: NEW
Notes: Groundbreaking New from Publisher. No Remainder Mark.

Product DescriptionLooking to take your photography to the next level? Need guidance on the basics, from choosing cameras to perfecting capture, managing files, editing images and developing a creative, critical eye?
Packed with quality images to inspire and enthuse, Digital Photography: Essential Skills takes a refreshingly practical, [...]

Which digital camera should I get?
It doesn’t matter by the price, which one do you reckon will last and be better to get? Check out the sites below and pick one of those.
Should i get:
http://www.kohls.com/kohlsStore/electronicsgames/camerascamcorders/camerascamcorders1/PRD~516010/Vivitar+101+MP+Digital+Camera.jsp
or
http://accessories.us.dell.com/sna/products/Digital_Point_Shoot/productdetail.aspx?c=us&l=en&s=dhs&cs=19&sku=A3137639&ACD=10550055-1418914-&AID=1418914
or
http://www.officemax.com/catalog/sku.jsp?productId=prod2740180&cm_ven=Performics&cm_cat=GottaDeal.com&cm_pla=Primary&cm_ite=Primary&affcode=performics&siteID=k39085&mid=
I would greatly appreciate if you can help me choose which one i should get!