Video Editing Software needed

I wish to make educational videos as a part of the content I provide for free on Traditional Taekwondo Ramblings Blog www.jungdokwan-taekwondo.blogspot.com or www.facebook.com/traditionaltaekwondoramblings . I found a video editing software I really liked, but unless I buy a licenced complete product I'll be limited in my editing choices and I will have a watermark on all my videos.

Since I do not make any money on my blog, and my integrity will not allow me to use a pirated version I hope to crowdfund the licenced product so I can make a lot more quality content.
http://www.jungdokwan-taekwondo.blogspot.com
www.facebook.com/traditionaltaekwondoramblings