>>1369915If you answer a few questions it will make things easier. What country are you from (and region in big ones), how old are you, and in what shape?
The key is to start slowly and work your way up. Remember you're not in a rush to anything. This are simple as they seem, but sometimes making small mistakes can come at a huge price, so while you're a noob don't take much risks, because you don't always understand the consequences. Don't get over confident and build your knowledge slowly, respect the power of nature.
I am not trying to frighten you, it's not difficult and on general terrain it's easy to mitigate the risks.
So to the point, google an easy and popular trail in your region spend like 10-15 minutes reading on it, length depends on your fitness, and just go do it. Then another, and another. Make sure you're pay attention to navigation (you may want to get a map, even if it's not needed and build a correlation between what you see in reality and on the map, but that depends on how far you set your goals), making sure you have enough water at all stages of the trail (and some to spare), carrying enough food, and not carrying too much junk.
You can also do some overnights, get some cheap 2 people tent borrow a sleeping bag from a friend/bring blankets (this depends on your region though) to make sure you're not cold, food, water, source of light and something to do (book or a hobby you can do outdoors). Next time refine whatever you bring with you, perhaps go over a list online for camping and decide what sounds like you could have used bringing. Do it again.