Hiking is simply going for a walk, but doing so the wilderness. Its not really that much different than taking a walk anywhere else except that the surfaces you are walking on. may be more uneven than the paved or flat surfaces you usually find in a city. Intended to help you ease into hiking If you are unsure or uncomfortable with the idea of going off into the woods for a walk, they may help you to get started.
One of differences between hiking and walking around in town is that you need to become more aware of your circumstances and what you need in order to take care of your body. While you are hiking there generally won't be a car, bus, house, store, or any other shelter to duck into if you get too hot or too cold or too tired or too hungry. And depending on when and where you go there may not be anyone else around. If you miss judge something on a short hike, it won't take long before you can get back to warmth, shelter, food, water, and more familiar surroundings.
You need to be prepared for whatever the weather conditions are when you go for a hike, and you need to be able to find your way back home again. For example, a fully feature north face jacket, a fit footware. Summer in most areas is usually the best time of year for hiking because the weather then is most pleasant, but if you live in an area such as the desert you may want to start hiking in the spring, fall, or even winter when temperatures are more moderate. Choosing friendly weather will mean one less thing you have to worry about while you are finding out what this hiking thing is all about. Later after you have gained some experience and want more variety or challenge you can go out when the seasons are less friendly.
Start out by hiking with others in a group. It is also a good idea at least at first to go with other people who have already been hiking and know what to expect and can help you out when you don't know what to do. but I recommend hiking alone if you are experienced. It gives them a chance to think about things, or the opportunity to not think and just experience. I really enjoy the solitude of hiking alone.
One of the most common mistakes made by the hiking novice is the wrong choice of outdoor gear. Choosing the right outdoor gear is very important.
Hiking by definition is walking which means being on your feet. So you should choose footware that is designed to make your feet comfortable while walking not footware whose sole purpose is to look good and get attention. If you are just going hiking for a few hours or a day. A good pair of walking shoes is quite adequate in most areas. The footware needs to be comfortable and needs to have the kind of sole that won't have you slipping on any surfaces that aren't perfectly flat.
Most people like to wear new footware for the first time on a hike. This is more of a problem with boots than it is with shoes. Give your feet a chance to get used to any new hiking footware by wearing it for short periods around your home or for short walks in the park. Generally the heavier the footwear the longer it will take for your feet to get used to the new shoes. If you wear something on your feet for a hike that don't already feel very comfortable, you may be sorry. Blisters are the most common result, and while not life threatening blisters certainly are fun. They can in fact be quite painful.
The clothes you wear are also important for comfortable hiking. Wear only jacket that feel comfortable while you are walking - not too hot and not too cold. Generally this means loose fitting clothes. At the other extreme you don't want your clothes so loose that they get in your way and trip you up. A fleece womens north face jackets aren't desirable for hot, sunny hiking weather. The jacket you wear all based on locale and weather.
Once you have some experience in hiking, if you want to do more by expanding your hiking season, or going out for longer trips, or going it alone, or tackling more difficult terrain, check out the other information available here and elsewhere for ideas. Consider these ideas and techniques in light of your own experience. Then experiment. Try different techniques. Test different pieces of gear. Find out what works best for you. Hiking is a very personal experience. What works best for you, what brings you the most joy while hiking, won't be the same for everyone else. Don't worry about it. Get the most out your hiking that you can.