As with any subject, being able to ask people for help is a great help. There are many talented people on this forum that will be able to help out with any questions you have about tutorials, and there are also the following photoshop forums if you need any more help.
http://www.photoshopforums.com/
http://www.devppl.com/forum/photoshop-forum-vf23.html
http://photoshoptechniques.com/forum/
http://forum.teamphotoshop.com/
Hope this helps
Craig