What are the key rights of a shareholder?
Shareholders have the right to receive dividends (if payable), to receive key company information (such as Annual Reports /Accounts), to attend Annual General Meetings or Extra-ordinary General Meetings and to Vote and be voted for on certain affairs of the company.
What is a share?

A share is part ownership in the company. As a shareholder, you are one of the owners of the company and the number of shares you hold is a measure of how much of the company you own.