First off, you choose a place. For a beginner, a place that is known to have a powerful and benevolent spirit is the best place to start. A lot of this lore isn’t obvious or well known. It takes research, luck and wandering around. My town has a Catholic sanctuary to Mary Mother of God and God in Nature—its in the industrial district, but its a large natural space with waterfalls and cliffs and its just intensely amazing. Barely anyone knows about it.
So when I go there, I just find a private place and sit. I make offerings to the land: milk, water, honey, also traditional (and only use if appropriate: coins, broken jewelry, broken weaponry) and I take whatever is freely given, some branches of a tree that are loose from the tree. Some soil that is piled up a bit. Some water from a little waterfall. That kind of thing.
I open up all my senses to the space. And let my body react. If that means I start crying, or laughing, or dancing or laying still it is what it is. I am communicating emotionally and physically with the land spirit. Gaze into shadows and let your focus go, images my form and you could see faces, just let those wash over you. Open up your sense of smell and see if any scents are associated with other forms of communication from the land. Sit and really listen. Sometimes you will hear the water, wind and trees making music or talking. Or bees will come and buzz to you. Focus just on listening. Save talking for later. You want to get your receptive focus really honed before trying to communicate back. Avoid saying thank you, as it can be interpreted as dismissive, and avoid making promises—as they can be thought to be kept not just by you, but your descendants as well. If you are going to get that tied to a piece of land, be very very very sure first—even then try not too. Better than promises are advanced payment. Like if you want to ask something of a spirit, bring a really generous offering and give it and then ask for something in return. In past times when families and people rarely left the place they were born, it wasn’t so risky to make a pact with a land spirit. Now when we are so mobile, mobile spirits are more possible to keep promises to. Pick up and dispose of trash on your way out. Rather than promising you will return, just keep returning regularly.
This is just one way of beginning. There are many techniques. Let me know if one particular direction interested you and I can elaborate.