Bitcoin Core – Can you advise on solo mining and firmware?

Could someone please help me with details about solo mining and firmware etc, or assistance with coding the firmware/management software, as well as information on how to solo mine, e.g. SSH to the miner interface, and probably a thousand more items or questions? Can you give it to me? . So I’m having more than one problem and I’m hoping to find someone willing to share their knowledge with me because so far I’ve had nothing but frustration and quitting is not an option. So this is me asking for help.