The sixth aliyah begins with a very nice mitzvah (as all mitzvahs are), of when a man marries a new wife he is exempt from any kind of service in the army, and he is to make his wife rejoice for a year. Yeshiva students go to kollel for a year after marriage and they don't go to evening classes that first year. Here also one finds one of the six remembrances (remembering what happened to Miriam) that are found on page 86 of the siddur Tehillat Hashem, and some laws of lending.