LCD is not displaying
I am not familiar with this particular camera, but if there is any other form of viewfinder on it, there is probably a way to switch the picture back and forth from the LCD display to the viewfinder. Personally I would not buy a camera without a viewfinder, but right now, the only companies who make cameras with an optical viewfinder are Canon and Sony, and even they are getting away from it! Shame on them!
The other type of viewfinder that works well is the type that reads the CCR image onto a smaller screen to use as a viewfinder, like my Kodak Z712, or the Nikon P-80, I think it is, with the 18X Zoom.
One of my issues is that I like to take available light photos outdoors at night, and the LCD screen simply is not bright enough to show the image, even though the camera is able to make a decent photograph in that light.
Most cameras will let you shut the LCD screen off to save battery power, so you will have to find out what every button on the camera will do, and make sure that the screen is powered on. It may also be that you have to recharge or replace the battery in order to have enough power to turn the screen on.
Of course, as we say in the computer world, RTFM! Most of your questions will be covered in the manual, so read it from cover to cover, with the camera in front of you. I was a freelance photojournalist for two decades, and trust me, there are still things I won't know about a new camera without either reading the manual, or experimenting.