Is there a loving-kindness meditation course?

Yes, and it follows the traditional sequence. A loving-kindness course works through the classical circles of metta: yourself, a benefactor, a dear friend, someone neutral, someone difficult, and finally all beings. You say who you most want to hold in mind and what would feel like progress, and the course paces those circles across 3, 6 or 8 sessions depending on the length you choose. A short course keeps the pillars and drops the middle circles. It opens with yourself in most cases, and can start with a benefactor instead when self-directed practice would be the harder place to begin.