You will need several things to get started when you write fantasy novels. You should have an idea first of all. This can be a little harder than you might think. You want it to be workable. But if you want people to read your story it should be interesting as well.
To make your story workable it will have to be on the logical side. Your story will have to have rules, limitations, and even structure. You should be prepared to explain how it works, or why the things in the story may happen. If you are going to write about supernatural creatures such as werewolves, and vampires they will need limitations. Magical and fairytale beings in your story will need to be explained as well.
You will need an outline for your story. Basically an outline is your story plot and idea on paper. The main characters, and geography need to be included in your outline. Just put down all the little details that your story will need and you have a beginning outline.
The main character of your story will need to be decided. When deciding on a protagonist (main character) you have to pick a gender. Some people would rather write a character of the same sex they are. That may not always work if your story line calls for the opposite gender. Next is the age, occupation, and background of your protagonist.
It can be hard to make a person from scratch that is why the main character can be the hardest in the book to come up with. Your main character will need physical traits and a personality. When giving your character their physical traits make sure to include height, weight, eye color and hair color. Do not put the traits in all at once because it will sound like a list. Slowly add them to the story.
Next the main character will need a personality. Describe the personality to the readers so they will know why the character is acting or reacting to a situation the way they are. Make sure to add descriptions of the personality such as shy, quite, outgoing, arrogant, dumb, sassy, or loud.