Preferably start by reading a good C/C++/C#/Java tutorial. Then read all of the following pages in full:

• http://www.angelcode.com/angelscript...obal_func.html
• http://www.angelcode.com/angelscript..._variable.html
• http://www.angelcode.com/angelscript...bal_enums.html
• http://www.angelcode.com/angelscript...namespace.html
• http://www.angelcode.com/angelscript...tatements.html
• http://www.angelcode.com/angelscript...pressions.html
• http://www.angelcode.com/angelscript...rimitives.html
• http://www.angelcode.com/angelscript...types_obj.html
• http://www.angelcode.com/angelscript...s_strings.html
• http://www.angelcode.com/angelscript...es_arrays.html
• http://www.angelcode.com/angelscript...func_decl.html
• http://www.angelcode.com/angelscript..._overload.html
• http://www.angelcode.com/angelscript...nc_defarg.html
• http://www.jazz2online.com/jj2plus/p...gelscript.html