主语 I;谓语 would like to entoll;地点状语 in the free seminar;定语从句 you advertised in the newspaper 修饰seminar,省略了关系词that或which;同位语 the one on managing our personal finances修饰semin...
主句是I'd like to enroll in the free seminar, you advertised in the newspaer作定语修饰seminar,意思为你在报纸上刊登的(免费讲座), the one(是指前面的seminar) on managing our personal finances解释说明这个讲座是有关个人理财管理的