Hello Irina,
While books may prove helpful, relentless practice remains the greatest teacher. Practice behind the lens creates experience. Experience behind the lens creates confidence. Confidence behind the lens creates satisfaction. Photography is only complicated if one allows it to be complicated.
If you're guided simply by a sense of awe and curiosity you'll discover the profound difference between merely looking at a subject and "seeing" the subject. Looking is objective, sterile and bounded. Seeing is subjective, emotional and boundless. This will allow your photography to transcend words written in a book and blossom into meaningful, personal expressions of art. Your potential is realized and fueled by your passion. Passion does not require validation from a book.
Wishing you the very best in your photography and all of the joy and special moments you'll discover and cherish along your journey.