Start by getting a large pot onto the stove, and bring it to a medium heat. Add in the oil and two tablespoons of butter, and let it melt. After a few minutes, add in a few kernels of corn. Cover with a lid, give a gentle shake, then once they pop, add in the remaining kernels. Cover, and begin shaking the pot, back and forth. This will be your job until the popcorn is done popping. Midway through popping add in the marjoram, paprika, and salt. Cover and begin shaking, and shaking to finish popping.