Create a Visualforce page that uses a custom controller to display a list of cases with the status of 'New'.The page must be named 'NewCaseList'.
The custom controller Apex class must be named 'NewCaseListController'.
The 'NewCaseListController' Apex class must have a publically scoped method named 'getNewCases'.
The 'getNewCases' Apex method should have the return type of 'List' and return a list of case records with the ID and CaseNumber fields and filtered to only have a status of 'New'.
The 'NewCaseList' Visualforce page must use an apex:repeat component which is bound to 'newCases'.
The apex:repeat component must refer to the var attribute as 'case'.
Within the apex:repeat component, bind a apex:outputLink component to the ID of the case so that the page directs the user to the detail page of the respective case record

Hi everyone i am new to salesforce i had some requirement please tell me 

Create a page which displays a subset of Opportunity fields using apex:outputField components. Bind the Name, Amount, Close Date and Account Name fields to the apex:outputField components.The page must be named 'OppView'.
It must reference the Opportunity standard controller.
It must have an apex:outputField component bound to the Opportunity Name.
It must have an apex:outputField component bound to the Opportunity Amount.
It must have an apex:outputField component bound to the Opportunity Close Date.
It must have an apex:outputField component bound to the Account Name of the Opportunity.

My Answer:
<apex:page standardcontroller="Opportunity">
<apex:pageBlock>
   <apex:pageBlockTable >
      <apex:outputField value="{!Opportunity.Opportunity Name}"/>
      <apex:outputField value="{!Opportunity.Amount}"/>
      <apex:outputField value="{!Opportunity.Close Date}"/>
      <apex:outputField value="{!Opportunity.Account Name}"/>
   </apex:pageBlockTable>
</apex:pageBlock>
</apex:page>

Error Displaying:
Error: Missing required attribute value in <apex:pageBlockTable> in OppView at line 3 column 25

Please help to improve my knowledge
 

Hi everyone i am new to salesforce i had some requirement please tell me 

Create a page which displays a subset of Opportunity fields using apex:outputField components. Bind the Name, Amount, Close Date and Account Name fields to the apex:outputField components.The page must be named 'OppView'.
It must reference the Opportunity standard controller.
It must have an apex:outputField component bound to the Opportunity Name.
It must have an apex:outputField component bound to the Opportunity Amount.
It must have an apex:outputField component bound to the Opportunity Close Date.
It must have an apex:outputField component bound to the Account Name of the Opportunity.

My Answer:
<apex:page standardcontroller="Opportunity">
<apex:pageBlock>
   <apex:pageBlockTable >
      <apex:outputField value="{!Opportunity.Opportunity Name}"/>
      <apex:outputField value="{!Opportunity.Amount}"/>
      <apex:outputField value="{!Opportunity.Close Date}"/>
      <apex:outputField value="{!Opportunity.Account Name}"/>
   </apex:pageBlockTable>
</apex:pageBlock>
</apex:page>

Error Displaying:
Error: Missing required attribute value in <apex:pageBlockTable> in OppView at line 3 column 25

Please help to improve my knowledge