I am compiling the newest stable Linux kernel, 4.19.7. It is not as difficult
as one might think it would be: just get it from https://www.kernel.org, then
Extract it to a proper directory, I have always made a new directory for it,
"~/linux-4.19.7", it is of the form "linux-version.number".

Then I go to the command line interface, go the directory "~/linux-4.19.7/linux
4.19.7/", execute the command "make menuconfig", choose "Save" from the menu,
then Exit and again in the command line "make deb-pkg".

It takes about 3 hours and 15 minutes to compile, and then I use the command
"sudo dpkg -i firstpackage.deb secondpackage.deb thirdpackage.deb", I do not
compile the "-dbg" package because it is the debugging symbols and takes too
much space, and I have found no use for it.