Sample Code:
<apex:page docType=”html-5.0″ standardController=”Opportunity” title=”Detals”>
<apex:outputPanel rendered=”{!if(Opportunity.stagename==’Prospecting’,true,false)}”>
This is prospecing tips
</apex:outputPanel>
<apex:outputPanel rendered=”{!if(Opportunity.stagename==’Needs Analysis’,true,false)}”>
This is without prospecing tips
</apex:outputPanel>
<apex:outputPanel rendered=”{!if(Opportunity.stagename==’Proposal/Price Quote’,true,false)}”>
This is without prospecing tips
</apex:outputPanel>
<apex:outputPanel rendered=”{!if(Opportunity.stagename==’Negotiation/Review’,true,false)}”>
This is without prospecing tips
</apex:outputPanel>
</apex:page>
Cheers!!!