You can always sell your body or your grandma.

You can start posting in this forum and join to any signature program to earn decent coins.

There is nothing like promo code for free bitcoin. You can get free bitcoin from faucets that pays in small aspects.

Are you open the Bitcointalk account to ask this question?

There are no promo codes to get Bitcoins.

You need to purchase Bitcoins from exchanges to get them.

Or use Faucets to start accumulating small parts of BTC.

Also you can earn Bitcoin by actively participating in this forum and join any Signature campaign.

I will be more surprised if he is a hero member when asking that question.

Well the first thing you must do is searching for information about bitcoin. As a newbie, you have to read all important things about bitcoin, like its definition and purpose. After that, I'm sure you would know how to get bitcoin.

If you create a wallet with Coinbase.com they give you $1 worth of Bitcoin for free.

Not a good advice for him, I think there is no sig campaign accepting a newbie to be enrolled. Atleast he must spend few bucks to buy a high rank account, so he can join a sig campaign. No method is free except faucet imo.

You can mine it to get Bitcoin but due to its high hash power, mining is not profitable! You can buy it or do some job paying in Bitcoin! IMO you need to learn more knowledge about what is Bitcoin and how to use it!
You can also use faucets, but they arent that profitable either. Bitcointalk sig campaigns are one of the best ways to earn BTC if you do not have a job yet.