Hi Georgina, I am so glad that you found this post inspiring and want to try painting. Your comment really touched me and I hope you have had some fun already pushing paint around. My advice for you, since you are just starting out is to play. See how many colors you can get out of your tubes of paint. Experiment with different ways of putting paint on the canvas. Play with putting different color combinations on the canvas. If you find a color combination you like can you repeat it? Don't pressure yourself to create a miracle, just have fun.
Out a play and fun a miracle may happen.
Enjoy!