Personally, Talking is the best advice and being funny is an important element.
Some people might say ' Don't judge on the book blah blah blah ', F**k it, girls judge boys from the first time they open their mouths to talk so pay some attention and don't forget about confidence
Also as Rosh says above.
The more time you spend with her, the more you get to know each other.
Over a period of time, love blossoms.
Once you spend enough time together, You will know