Hi,
Are the errors a problem and do I need to do something? Can I proceed?
Yes of course, they're *errors* after all. Look here:
/bin/sh: 1: python: not found make[2]: *** [Makefile:168: out/romlayout16.lds] Error 127 make[1]: *** [Makefile:84: build] Error 2 make: *** [payloads/external/Makefile.inc:65: payloads/external/SeaBIOS/seabios/out/bios.bin.elf] Error 2
In the first line it says it could not found python on your system. So, install python and try building again by running `make clean` followed by `make`.
No offense, but you may be better off with buying some device which has coreboot pre-installed (if that's what you want). For a list of vendors who sell devices with coreboot/SeaBIOS pre-installed, look at the section "Consumer platforms" at the bottom here: https://coreboot.org/users.html
If you want to proceed with doing it yourself, be prepared that it will take some time (several weeks+) and that you will have to learn a lot.
Good luck!
Merlin