layers are independent pictures stacked one to another,you can make for every stroke independent layer,and if there is something you did wrong or disliked you can change or simply delete layer and everything on layer will gone,or you can change colors for that layer independent from other layers and strokes
You cannot use Photoshop to paint on the whiteboard. You need to use the built in painter.
use paint.net its a free program that is so much easier to use or go online to photoshop manual on google and read the manual.
What do you want to draw. Is this a general question (i.e. where are the drawing tools on Photoshop?) or a question about drawing Manga art on Photoshop? Please make your question clearer.
save from Corel draw file as psd in order to be able to open it in Photoshop, photoshop doesnt support cdr files
Adobe photoshop, coral draw etc
To draw ellipse or circle shapes and paths.
off course,it is worth,if you attempting to draw with software then check Corel Painter it cost 1/10 of Photoshop
Any..since all of them has the brush tool...you can use it to draw..
It is easier to teach kids how to draw because they will be way more concentrated
You should seriously consider use of css, photoshop and illustrator for designing the diamond shape. PHP is originally meant for development (that too server side)
get photoshop/ fireworks/ corel draw etc...use a (this is an estimate)15px x 15px canvas and just draw it.
A drawing tool is like a pencil or paint brush etc. So that it helps you draw.