'Anna and the French Kiss' by Stephanie Perkins is also ideal. It's a story of a girl who goes to a boarding school in Paris and falls in love. The setting in Paris adds a lot of charm, and the relationship development is really fun to follow.
Another great one for beginners is 'Attachments' by Rainbow Rowell. It's set in an office where an IT guy falls for a girl through reading her emails (in a non - creepy way). It has a really sweet and engaging story with a touch of humor.
Sure. 'The Rosie Project' by Graeme Simsion is a good start. It's about a genetics professor who has a very logical approach to finding a wife and how his plan gets turned upside down when he meets Rosie. It's humorous and has a unique take on romance.