Working with PX4 in development environment

Im new, have no coding experience, are unfamiliar with the PX4 structure and constructs, and want to learn how to work with the code, make adjustments and utilize the source code within a development environment. I am asking if anyone would feel comfortable spending a little time helping me to understand these things to begin working with PX4 in a more foundational and in depth way. Thanks.

Thanks. I was asking for some help in working with PX4. Meaning, where do I start, what programs do i use to work with it, how do i utilize the repositories, what is where there, what language is used, where do i start to be able to code in PX4? Thanks