Many of us seem more knowledge. There are so many ways to obtain our growth!

First, through our own organization, from people who have also learned and implemented strategies or completed their own degrees.
Teaching PD: we learn by teaching and guiding others! We find best ways to explain as well, getting to key points.
Research articles and journals! Through our own universities and degrees, or on our own helps. Conducting a literature review supports what we speak of.
Workshops and webinars! Many times these provide the most free resources and practical implementation strategies.
International and National conferences! We learn from various cities, states, and learn a global perspective. This also has high yields of networking opportunities.