Feeling overwhelmed

Have been trying for a couple weeks now to get my xps14 (L421X) running Mojave. Non-stop troubles. I've done tons of reading but still confused, especially because some guides are old, some skip steps, etc.

Can someone please explain the basic process in punctuated form?

I guess kexts are needed to get each piece of hardware working. Where do I find them?

What is dsdt? No clue.

I got osx installed once, but how do I set up clover to work as a bootloader without USB?

Do I need clover configurator?

Thanks everyone..