Here are two videos that do a good job explaining some Java concepts we have covered:
Java objects/classes: video link
Linked Lists: video link
In this class, you’re making your own objects, and it can be confusing at first, but soon you will be a natural! Remember your book is a great resource and has a great companion website where you can even download a pdf of the book: book site link
Here’s two a great visual explaining the different parts of an object from the point of view of the code.
It’s a good idea to go over the lecture slides and do some of the practice problems from the book & its website. practice problems link