Man, all women are different so I'd say try and engage her in a way the guys above have said...however, just because she gives you her cell number, does not mean that she is necessarily interested....just be yourself and all will reveal at the right time! Remember...the man who thinks that he understands women, knows nothing at all about women! Good luck man!

I have corrected your question "I like a person, but I do not have courage to tell her about my feelings.What can I do?" I would ask this woman out for a coffee, that way you can see if she likes you. Keep the conversation light, movies, food preferences etc. If she smiles and listens to what you say, you can suggest going to a movie that she wants to see. Ask for her mobile number, if she gives it to you she is interested. Good luck.

Start by complimenting her on something she has done, not on what she is. This is less frightening, because you are simply stating facts, not your feelings. See how she reacts. If she responds in a warm and friendly way, that will give you courage to start expressing your feelings. If she is cold and indifferent, your private feelings for her remain private, and her rejection is less painful. Spend time with her just talking; it will be clear to her that you are interested. It will also be clear to you whether she is interested. Be yourself. Do not try to impress her, as she will realize in a few seconds that you are being phony. Women are particularly skillful at this. Further, trying to impress her would make you look insecure and desperate, which is repellent to most women.