You can find a lot of tutorial that will familiarize you with the tools. in a couple of days you can enjoy painting and discovering the style you prefer whether realism or impressionism.
I had that experience before. Photoshop is excellent for photo editing but I could not do the effects I want when painting . later on I discovered Corel Painter as the right software. It is compatible and works well with a wacom tablet. You can even switch to photshop in between because they have similar platform . Corel painter have different complete sets of brushes that simulates real effects of mediums like oil, acrylic, watercolor, sargent brush, van gogh brushs and thick paint etc. At first I was a total stranger, but my intense desire and inspiration push me to exceed my limits. You can find a lot of tutorial that will familiarize you with the tools. in a couple of days you can enjoy painting and discovering the style you prefer whether realism or impressionism. Wishing you the best!