There are to types of digital cameras. It's the DSLR and PNS or point and shoot cameras.If you want ease and postability choose point and shoots. These cameras are very user-friendly. As the name says, just point and shoot. mostly are also light and fits on your pocket.If you want to have more control on your cameras then you should choose DSLRs. You will have more control on every aspect of exposure like shutter speed, aperture, iso sensitivity etc. You can also change lenses from wide angle, standard zooms, to long range zooms (paparazzi want these). But the downside is it's heavy, bulky. But if you want to have to have pictures which are sharper per pixel, then you would want to have DSLRs.
