Verified answer

You need to look for solid studs to attach it to either directly or do some deconstruction & put in some blocking (a 2x4 between the studs horizontally to solidly mount to) if you're really worried about your television succumbing to gravity. The surface picture doesn't really tell me much except it's probably drywall w/a textured surface which probably won't be enough. It's not impossible, start w/a stud finder & figure out where the bones are.

23 inch LCD is so light you should have no problem securing it to any surface available. There are great wall anchors available these days which will hold it just fine even if you are not near a stud. Your mounting bracket may already come with some and simple instructions on how to use them. Easy and safe. Check out the local lowes/homedepot type store in your area. They should have hollow molding in the electrical department for concealing your power cord and interconnect cables. You could easily do this job in one afternoon. Be sure and use a level.

Get a stud finder and attach the brackets to the studs.

The short answer is yes - because any wall that supports drywall or plaster will almost certainly support a television, but it isn't always that easy.

Depending upon the age of the home, your wall surface is either plaster or drywall. Plaster was originally applied over lathe, and eventually over blueboard or a drywall-like product. Drywall is merely a gypsum based product that is applied to the wall before the joints and screw/nail holes are filled to make the wall appear seamless.

Both of these products are attached to the framing of the wall, which most often is 2x4. If this is an exterior wall it might be 2x6, and in some areas undersized framing is used which could be 2x3. If it is a fairly new structure and an interior non-load bearing wall - it might even be metal framing (although the chances of that are very low. Also, because we can see the damage to your wall we know it is a hollow framed wall - not plaster on top of brick or concrete.

Therefore, provided you can find a stud within the wall you should have no issues hanging a television. You will want to ensure the wall mount is securing fastened to at least one stud although two is preferred. In most cases the wall mount itself will come with instructions detailing how to fasten to the studs, and it should include hardware for both wood framed and sold wall (concrete or brick) construction.

What you don't want to do is fasten the mount directly to the drywall or plaster. Although there are some drywall anchors which are capable of handling the weight, it just isn't a great idea. The last thing you want is your shiny and expensive television falling on to the ground.

You have to find out where the studs are inside the wall and attach to the studs.