This lens features pre-cut threads on the flange that surrounds the front of lens barrel. These accept a 58mm filter with male threads. The arrangement is typical, you will have no difficulty finding 58mm filters.
By the way, we are talking optical filters. These are made using transparent flat glass or plastic. There are a plethora of filters. We mount a filter when we want to modify the incoming light rays in order to realize an enhancement.
Neutral Density (ND) filters are gray in color and they function just like sunglasses in that they reduce the brightness of the available light. Now your camera is capable of handling bright light conditions, It is not likely that an ND filter will be needed if you are doing general picture taking. However, you can use an ND filter to make enhancements. In portraiture, the custom is to blur the background so it does not distract. To accomplish, we deliberately set the lens aperture to a large diameter (f/3.5). This act yields a shallow distance zone (depth of field), and this blurs the background. If the subject is well lighted, opening up the lens to such a large diameter is challenging, we mount an ND to enable this deed.
We mount an ND when we choose to use a super slow shutter speed under bright light conditions. This simulates dim light conditions. A super slow shutter causes moving objects to image blurred. This is a trick way to make fast moving water in a stream or waterfall appears tranquil.
We can mount a graduated ND. This is a filter, very dark at one end that gradually changes to very light at the other end. We use it to help balance the brightness difference between sky and foreground.
The ND has many uses, I recommend that first you buy a polarizing filter. This filter acts like a mild ND and at the same time, delivers lots of enhancements. A polarizing filer mitigates atmospheric haze common when imaging distant landscapes. The polarizing filter mitigates reflections from glass was water. All the while it increases color saturation (adds contrast) without altering the natural colors of a vista. This is your best bet for a first filter.
Also, please read your camera manual and basic book or two on photography. This plus practice are the keys to this kingdom.