If you are new to Photoshop and want to learn fast, I would suggest taking photoshop classes online through vtc.com. I've taken them and they are great. It's about $30 per month and is well worth the money since you can also take classes in many other software apps as well.
Also be aware that if you want to create art like that, you should get a tablet from wacom.com
Practice is the best learning tool, just play around with it!
EDIT: OOPS!!! Just realized this was 9 months old!