The rain clouds are coming

Here goes..... this my first picture to be downloaded, so please be gentle! As far back as I can remember I've always had a camera in my hand, but I've never tried to take a 'proper' picture. I've had several cameras, but have always shot in the automatic mode and have had some nice results. However, I'm tried of 'nice' photos so here I am. I've joined a photography night course and I'm ready to learn so any advice would be greatly appreciated.

Not sure what to say about the picture I've chosen, apart from the fact I like it. I love the clouds moving over the blue of the sky and the contrast. I took several piccies at the same time, but chose this one because of the darkness in the trees which i feel adds to the atmosphere.

Sony HSC-9,ISO100,F/8,1/3200s