Welcome to DV, Catalin! The techniques recommended by DV staff are located here: Induction Methods and Techniques

For a beginner I would recommend first focusing on improving your dream recall with a dream journal, reality checks and raising awareness throughout the day. Then you might want to look at the DILD and MILD techniques first, since those are generally easier for most beginners. However, there are exceptions, and different techniques work better for different people. Over time you will hopefully discover what works best for you.