To get the most out of your practice you'll want to begin digging into the non-movement aspects of yoga like the breath and meditation. Chakras are one of these "subtle" tools of yoga that make a big difference over the long haul. While you'll get an impact whether you know what is happening or not - it is helpful to understand how our "energy body" responds to the physical practice of yoga and how that is of benefit in finding less suffering and more joy.
Meditation is, perhaps, more powerful than any other form of yoga but we can have alot of resistance when we start. Yoga nidra is a different practice that achieves a similar brain pattern and results - and it might be more accessible...