i want to invest in some major companies such as mcdonalds and or google and i would like to know from someone who has either done this or know somebody who has whether or not its worth while and is it a good way to go
You can buy stocks in any company that's listed on the stock exchange, why on earth do you think you need to work for them? 99.99999% of people owning shares don't.
You need to learn a lot about Stock&shares before showing your money at them.