Leviticus 19 is a chapter of miscellaneous (sundry) laws and regulations. It starts out focusing on idolatry and that that is to be forbidden among the people of Israel. From there, the chapter focuses on various laws directly and indirectly related to the Ten Commandments, such as not stealing and dealing falsely with neighbors, and not swearing falsely in the name of YHWH. There are also other sundry laws. Some of those laws we will see again, and some don’t really reoccur in the Torah.
Here we see the command not to take vengeance on your neighbor because “I am the LORD (YHWH)” We also see commands about what to do with the fruit of your fruit bearing trees in the first five years after they are planted, as well as tattoos and self-cutting, and having respect for those with grey hair.
Overall, there are many interesting laws and regulations within this chapter, most of which i haven’t even hinted at. So i recommend that you take some time and look through and read the chapter for yourself.