Switching over to OO PHP...gradually

I think I am trying to learn too much new stuff at once. I've made some breakthroughs this week but I am plateauing from lack of rest. I'm starting to wrap my head around the verbosity of declaring some variables. I am also switching the mysqli style I use from procedural over to the object oriented style to see if that helps me make more sense of the syntax. I know OO programming is more than just how the code looks in the text editor, it is how it is organized.

I'm going to use this blog as my project for learning the principles of OO programming using PHP. I hope to be able to use the knowledge gained on this website to help me get a better understanding of how to work with WordPress more easily.