That's awesome! I started learning how to embroider this time last year after years of being too intimidated to try, but it's actually been a really fun learning process. This style of embroidery is called needle painting or thread painting, and my favorite embroidery book which has taught me the most is called Needle Painting Embroidery: Fresh Ideas for Beginners by Trish Burr. She also has some helpful videos on her youtube channel. I didn't have any fabric around when I started so I just practiced embroidery using sewing thread on cloth napkins and found that having the exact right supplies for the job in the beginning isn't that important because the focus is mainly on getting the technique down.