How can i  display records of account, contacts, opty on the same Salesforce Visualforce page and then process the selected records using wrapper class?

/*VISUAL FORCE PAGE AND CONTROLLER WITH WRAPPER CLASS*/

<apex:page controller="MultipleContact" sidebar="false">
<apex:form >
<apex:pageBlock >
<apex:pageBlockTable value="{!listContact}" var="cnct" id="ref">
<apex:column headervalue="Last Name">
<apex:inputfield value="{!cnct.con.LastName}"/>
</apex:column>
<apex:column headervalue="First Number">
<apex:inputfield value="{!cnct.con.FirstName}"/>
</apex:column>
<apex:column headervalue="Email">
<apex:inputfield value="{!cnct.con.Email}"/>
</apex:column>
<apex:column headervalue="Title">
<apex:inputfield value="{!cnct.con.title}"/>
</apex:column>
<apex:column headervalue="RemoveContact">
<apex:inputCheckbox value="{!cnct.isSelected}"/>
</apex:column>
</apex:pageBlockTable>
<apex:pageblockbuttons >
<apex:commandButton value="Add More Contact" action="{!addContact}" reRender="ref" />
<apex:commandButton value="Save Contact" action="{!SaveContact}"/>
<apex:commandButton value="Remove Contact" action="{!RemoveContact}"/>
</apex:pageblockbuttons>
</apex:pageBlock>
</apex:form>
</apex:page>
public class MultipleContact{

public list<cContact> listContact{get;set;}
public MultipleContact(){ //constructor
listContact=new list<cContact>();
listContact.add(new cContact(new contact()));
}
public void addContact() {
Contact cnct = new Contact();
MultipleContact.cContact cn = new MultipleContact.cContact(cnct);
listContact.add(cn);
}
public pagereference saveContact(){
List<Contact> myList = new List<Contact>();
for(cContact c : listContact){
myList.add(c.con);
}
pagereference pg=new pagereference('/003/o');
insert myList;
return pg;
}
public pageReference RemoveContact() {
List<cContact> li = listContact;
for(Integer i=0 ; i<li.size(); i++){
if(li[i].isSelected == true){
listContact.remove(i);
}
}
pageReference pg1=new pageReference('/');
//delete listContact;
return null;
}
//Inner class of contact
public class cContact{
public Contact con{get;set;}
public boolean isSelected{get;set;}
public cContact(Contact con){
this.con = con;
isSelected = false;
}
}

}