Mount and programming my own drone for mapping(ppk) and fpv for an begginer

Hello ARDUPILOT community, i want to build and program my drone for mapping and fpv.
Could someone help me with something abou the subject like ways to program the drone, ways to mount the drone, anything to help me to start my own drone.
I found the RVjet from range video an good frame to start my project.

Ps:if there is anyone that teaches the things that i want we can settle an price for the classes.

All the information to get started is in the wiki: