I am brand new to VF and Apex, and am trying to figure out how to create what should be a very simple wizard.  Basically, here's what I want to do:

Page 1:

 * Allow the user to choose an Account from a list of all the Accounts in the system (via a Lookup field).

I think I got this okay --- but maybe I'm doing it wrong.

Page 2:

 * Display the Account chosen and the value of the Global Region custom field from that Account. (Can't get this to happen AT ALL)

 * Based on that Global Region field, offer specific value options for a Product picklist field

    (if Global Region == A, offer 1, 2, 3     if Global Region ==B, offer 4, 5, 6     if Global Region==C, offer 1, 3, 5

 * Save record and display Account, Global Region and Product.

I think I have to use SelectOption, but again --- I am brand new out of training, trying to document everything that I do based on what I learned there, and don't remember learning that.  Is anyone willing to help me out (and explain what you're doing in "regular" language rather than "programmer-to-programmer)?

Thanks!

VF Page 1:

<apex:page standardController="Assistance_Request__c" extensions="ARWizard" tabStyle="Assistance_Request__c">
    
    <script>
    function confirmCancel(){
    var isCancel = confirm("Are you sure you wish to cancel and exit this Assistance Request?");
    if (isCancel) return true;
    return false;
    }
    </script>
    
    <apex:sectionHeader title="Assistance Request" subtitle="Step 1 of X"/>
  <apex:form > 
      <apex:pageBlock id="theBlock" title="Assistance Request Creation - Choose Account" mode="edit">
          <apex:pageBlockButtons >
              <apex:commandButton action="{!step2}" value="Next"/>
              <apex:commandButton action="{!cancel}" value="Cancel" onclick="return confirmCancel()" immediate="true" style="margin-left: 2em"/>
          </apex:pageBlockButtons>
          <apex:pageBlockSection title="Account Information" columns="1">
              <apex:inputField value="{!AssistanceRequest.Account_Name__c}"/>
          </apex:pageBlockSection>
      </apex:pageBlock> 
  </apex:form>
</apex:page>

VF Page 2:

<apex:page standardController="Assistance_Request__c" extensions="ARWizard" tabStyle="Assistance_Request__c">

    <script>
    function confirmCancel(){
    var isCancel = confirm("Are you sure you wish to cancel and exit this Assistance Request?");
    if (isCancel) return true;
    return false;
    }
    </script>
    
    <apex:sectionHeader title="Assistance Request" subtitle="Step 2 of X"/>
    
  <apex:form > 
      <apex:pageBlock id="theBlock" title="Assistance Request Creation - Request Details" mode="edit">
          <apex:pageBlockButtons >
              <apex:commandButton action="{!step1}" value="Previous"/>
              <apex:commandButton action="{step3}"  value="Next"/>
              <apex:commandButton action="{!cancel}" value="Cancel" onclick="return confirmCancel()" immediate="true" style="margin-left: 2em"/>
          </apex:pageBlockButtons>
          <apex:pageBlockSection title="Account Information" columns="2">
              <apex:outputField value="{!Account.Name}"/>
              <apex:outputField value="{!Account.Global_Region__c}"/>
          </apex:pageBlockSection>
          
           <apex:pageBlockSection title="Request Information" columns="2">
              This is where the request product, category and action will go.
          </apex:pageBlockSection>
      </apex:pageBlock> 
  </apex:form>
</apex:page>

Controller Code:

public with sharing class ARWizard {

// First declare all properties that will be used to maintain the state of the wizard.
// Search results are not transient in case the user accidentally selects the wrong one and wants to go back.
    
// First property is the standard controller, called controller,
// so that in read mode it will work as object is built.
     public ApexPages.standardController controller {get; set;}
     
// Next is an Assistance Request variable called assistanceRequest to insert when we're done
    public Assistance_Request__c assistanceRequest { get; set; }
     
// Next property is the Account, referenced by the variable called account with default getter/setter
    public Account account {get;set;}
    
// Next property is the Account ID called "accountId" with default getter/setter
    public ID accountID {get;set;}
    
// Now I have to build a constructor to create the Assistance Request 
    public ARWizard (ApexPages.StandardController standardcontroller) {
      
  }   

// The next 3 methods control navigation through the wizard. 
// Each returns a PageReference for one of the 3 pages in the wizard.
// Note that the redirect attribute does not need to be set on the PageReference 
// because the URL does not need to change when users move from page to page.

// First is a method called "step1" to return the page reference for the ARStep1 page
    public PageReference step1() {
        return Page.arStep1;
    }

// Next is a method called "step2" to return the page reference for the ARStep2 page
     public PageReference step2() {
        return Page.arStep2;
    }

// Next is a method called "step3" that validates that the Account Name is not null    
// This method is called by step2 & step3 pages in the action attribute,
//	in case anyone tries to go directly to them it will navigate the user back to step1
    public PageReference step3() {
        if (Account.Name == null) {
        	Account.Name.addError('Please choose an Account.');
        	return null;
    	} else {
    		return Page.arStep3;
        }
    }
	
       public PageReference save() {
      	     	System.debug('Account=' + Account);
        	try{
        		insert assistanceRequest;
        	} catch (System.DmlException e) {
				ApexPages.addMessages(e);
				return null;
    		}
        	controller = new ApexPages.standardController(assistanceRequest);
        	return controller.view();
        }
}