In assembly, how can I store esp's address displaced by 4 to a variable? -

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Is it possible to do this? What do I want to do, for example another register, esi, esp + 4 address 

  mov ecx, [esp + 4]   
 I Which I understand, does the ESP + 4 not address the value contained in the address of EPC + 4 in Exx but above the code given above? I'm relatively new to assembly programming, so thanks to everyone who would be happy to help me.  
 
 
 
 Usage (Load Effective Address)  
 For example:  
  Lea Xx, [esp + 4]   
 You can do this manually like it Do:  
  mov ecx, esp add ecx, 4

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