Everyone wants to decorate their apartment and make it feel more like home, so decorating your rental property is only natural. There are many reasons to want to make holes in your walls and decorating and putting up pictures, frames, or shelves is only one of those many reasons. When hanging pictures, however, it is important to note that nowadays there are many methods to avoid even putting nails on a wall. Command strips are easy to use and unless you're hanging something extremely heavy, they can support general decor. Mounting a TV on a wall is another reason many must make holes in their walls. In general, you should make sure that mounting a TV is okay with your landlord, however, most are typically okay with it. Just make sure to cover up the holes that you will have to drill before you leave.
This is the same case with installing new curtains or blinds. These are typical to want to hang up in a new apartment, just make sure to fill in any holes as you leave.