You can use it to record places, events, ideas, and emotions. Anything you draw you will remember better than if you just photograph it.
When you draw something you spend time looking and thinking about the moment and the thing you are drawing.
If you sketch on holiday, rather than just snapping photos, you will not only have a lovely record of your travels, but you will find you can look back through your sketchbook and memories will come flooding back.
Sketchbooks are for storage of your ideas.
When you don’t feel inspired, or feel like painting but don’t know what to do, a well filled sketchbook will be full of ideas waiting for you.
Improve your drawing ability and observational skills.
Look at everything around you - nothing is too mundane to draw.
There's no right or wrong way to draw. The important thing is to keep practicing, every day if possible, even if just for 10 minutes.
Don’t try to make perfect pictures in your sketchbook, just practice your skills, record fleeting thoughts and moments of life. It's more about the process than the product.
Like a diary, it can be private, you never have to show anyone your sketchbook if you don’t want to. It is a place to be completely free, make mistakes, make a mess, try new techniques or materials, play. Nothing is ‘wrong’.
Carry one with you at all times.
It’s nice to have one small enough to fit in a handbag or pocket at all times, and possibly a bigger one for serious sketching trips. You can get a cheap one - if it’s too precious you will worry about spoiling it, although you should make sure the paper is good enough to take whatever mediums you are going to use.