Vinyasa Flow Yoga is a style of Hatha Yoga that involves linking postures together in a fluid movement with the breath. For example, you might move from Warrior I to Warrior II and back again. The movements are flowing and synchronized with the breath. Postures are not held for long periods necessarily, and they do not remain static. Micro-movements are used to encourage alignment in the pose.
Vinyasa sequences are often connected using plank, chatturanga, and upward dog (or cobra) then downward-dog as the basic vinyasa. So start by flowing in that vinyasa. Once you are back in downward-dog, swing your right leg forward into a lunge, plant the back foot, and then rise into Warrior I. You could then go back into plank, go through the basic vinyasa to downward-dog, then swing your left leg forward and do the other side.