Welcome to my drawing resources!
For any beginning "maker", drawing is one of the best places to start! For any experienced maker, it's important to practice your fundamentals. Think of drawing like throwing free throws for a basketball player.
I suggest starting with Betty Edwards's "Drawing on the Right Side of the Brain" workbook for the basics, then moving on to Proko.com lessons for structure and technique. You can buy extras from both, but there is plenty of content online for free to get you started!
Reference image resources for drawing: SketchDaily and AdorkaStock.