I love to share information about free resources. Strathmore is currently offering a free online watercolor workshop. During the first two lessons of this workshop, you paint a watercolor landscape. The second set of lessons demonstrates how to paint a botanical rose. The workshop will remain online until the end of the year. Just set up an account and you can watch the videos at your convenience.
Here is the rose I painted during the Strathmore online workshop, The Mind of Watercolor.