Storie Writing Improvement

Hi everyone, I was wondering if some one might be able to point out some good resources that I could use to help me improve writing stories. I struggle every time I write a stories because I end up saying things along the line "and this happen, then this and this". Every time I read one part of my store it sounds terrible. Not very visual on paper (when I reread it later on, so like the people don't come to life), but in my mind the whole world is planed out, inc the stories.