Both this piece and the Chorale in example 109 come from Schumann’s Album for the Young which is highly recommended. Even if you don’t intend to play Classical music as your main style, you will get tremendous benefit from learning more of these pieces. You should also check out JS Bach’s Two Part Inventions, and Bela Bartok’s Mikrokosmos. These works will improve your technique, broaden your harmonic knowledge, and (in Bach’s own words) "give you a strong foretaste of composition". If you do intend to pursue Classical music further, it is recommended that you do so with a teacher to guide you in regard to both technique and repertoire. In most countries there are systems of progressively graded exams for studying Classical music. Many people don’t wish to sit exams, but the grades are an excellent guide to suitable pieces and technical studies for players of all levels.