Hi Folks! 

I hope you're keeping safe in this Pandemic era.

I am a beginner transitioning into an Intermediate flyer and planning to use Flight Controller for my fixed wing(s) mainly for RTH and Geo-fence but I'm not sure where to begin.

I have had experience using Gyros but never a Flight Controller.
I would really appreciate any help  on how to use a Flight Controller for a fixed wing. Since, I'm a noob with Flight Controllers, I need to start from the basic and move up.

Looking forward to learning and improving my skills in this great hobby.

Thanks! 

Most of the flight controller claim to have support for fixed wings or at least flying wings. But they are not that popular. I am not an expert but  have heard good stories with Arduplane compatible boards (need to google). You will get many setup videos on youtube.

Matek Brand has many Flight controller for Fixed wings, F411, F411-wse, F405, F765 etc, all works with Inav and some works with both Inav and Arduplane. 

https://inavfixedwinggroup.com/

Thank you so much. I'll definitely give it a read.