There is a lot to say about hiking, about the best equipment, the optimal shoes to wear, what food is best to bring on a trip, whether to sleep in a tent or at campsites, where to hike—untamed wilderness or along marked trails and paths, whether to climb peaks or walk in the forest, whether the route is from A to B or a round trip with the same start and finish.
If you were looking for specific answers to questions like these, you will be disappointed, as there are none. Every individual is as different as every rock on the mountain, and it takes time to gain experience and knowledge about everything from what equipment suits your needs to what type of outdoor life you enjoy.
A good place to start is with a map and compass and learning the basics of orienteering. Then there is the physical aspect; it is good to know your own body, what pace works well for you, and how often you need to replenish your energy. Then there is equipment such as shoes or boots, backpacks, tents, sleeping bags, cooking equipment, rainwear, and so on. The list can be long, and it is also customized according to individual needs and experience and, not least, updated when new smart outdoor gadgets enter the market.