According to this article, there are many benefits in drawing for adults. Drawing is a great way to improve our creativity and it also lets us express our emotions & feelings.
I use drawing as an activity in the community groups that I'm involved in and have definitively seen it's benefits!
Here are five ebooks to hopefully inspire you to want to draw. Some are for kids but it's good to let the inner child out every now and then! All ebooks were free at the time of posting.
NB. Please check they are $0.00 before you click though!
How to Draw the Simpsons Step-by-Step: Easy Drawing Lessons for Kids to Learn to Draw the Simpsons - US, AU
Perspective Drawing: Easy and clear drawing guide for beginners - US, AU
How to Draw Zoo Animals Step-by-Step: Easy Drawing Lessons for Kids to Learn to Draw Animals from Zoos in Chibi Style - US, AU
Doodle and Zen Drawing Book: Step-by-Step Tutorial on creating stunning drawings - US, AU
How To Draw Manga: A Step By Step Illustrated Manga Drawing Guide For Beginners - US, AU