If there is one best yoga sequence that yogis everywhere would unanimously vouch for, it would have to be the sun salutation yoga sequence.
Sun salutations have survived the test of time over centuries long before yoga became popular in the West. They're the foundation upon which most yoga practices are built.
So what exactly are sun salutations? The words are derived from the Sanskrit phrase "surya namaskara," "surya" meaning "sun" and "namaskara" meaning "salutation." It was originally developed as a way of expressing gratitude to the rising sun for providing us with all the life and energy on Earth. Sun salutations are a great way to learn the importance of proper breathing in yoga and to experience the power of gratitude (in this case, to the sun).
Full disclosure — I'm not a yoga teacher (hoping to becoming one soon), but I've been doing these since I was very young so I felt compelled to share here.