Earn Bitcoins accepting them as payment method
In my opinion, the main and easiest way to earn Bitcoins is by accepting them as a payment method. If you have a small business, the integration is quick and easy. It does not matter if you have an online store or a traditional store or if you sell products or services. You have to follow the following three steps:

Get a Bitcoin wallet online from Coinbase. If you are not sure what a Bitcoin wallet is, visit the What is Bitcoin section. There are also other providers apart from Coinbase. When you open your account with LocalBitcoins you will receive a free Bitcoin wallet with a wide range of functions. I see them serves you better. And remember that no wallet is absolutely free of dangers so be careful with your money. Above all, make sure that your Bitcoins are stored in a safe way in 2 or 3 different places.

Display a QR code with your Bitcoin address next to your cash register. There are two options here.

When you have your wallet, go to the section that says 'Receive Money' or 'Add Funds' or something similar. There you will get a QR code that has your Bitcoin address encoded. Print the image with the QR code and put it next to your cash register. Your customers already have a Bitcoin application installed on their phones, where you can enter the value of the purchase in dollars or euros. Your applications calculate the corresponding Bitcoins value. Automatically calculates the real exchange rate to get the correct amount. In your wallet account you can confirm receipt of payment.
Some wallets offer the 'Receive Money' function. When you earn Bitcoins by receiving them as a form of payment very often it is very useful that you use the button called 'Create a Payment Request'. Enter the amount of Bitcoins that the customer must pay and show the corresponding QR code. This way customers do not have to enter an amount, which makes the payment process easier for them. To use this method, you have to first calculate the price in dollars or euros in a Bitcoin amount before you enter so that the QR code generated will be the same.
Show the logo 'Bitcoin accepted here' at the entrance of your store so you can show all your innovative payment integration.

That is all. It's very easy so start earning Bitcoins now by selling your products and services! This was just a brief description of how to earn Bitcoins by accepting them as a payment method.
Earn free Bitcoins by completing steps on internet pages
There are many pages which offer you win free Bitcoins. As is the case with most of these pages, the idea is that you visit the page and just by having a look you get a small amount of Bitcoins. The concept has something in common with watching free television. You see advertisements to see then something you really want to see, such as a movie or music videos.
While this concept is legitimate, what you earn for the time you invest is very small. So when you receive Bitcoins from these propaganda pages, Bitcoins come with a cost of your time. As the saying goes 'there is no such thing as a free lunch'. But take a look yourself. Here is a list of some of the pages that I think are interesting.
BitVisitor :: Win Bitcoins by viewing internet pages or videos. Each page is shown for five minutes. Then you can click 'Next' as confirmation and continue to the next page. What I like about this page is that what you earn, you win after more or less an hour. This is a great advantage compared to the other pages that pay Bitcoins in exchange for completing certain steps. Also, you do not have to have a user account here, just enter your Bitcoin address. The amount of Bitcoin you can earn is limited, however. For five minutes, you can earn something like μBTC 100 (that's 100 micro-coins or BTC 0.00001) which means that your hourly profit is more or less BTC 0.00012. It is not much money but it is a start to earn your first Satoshis and get familiar with Bitcoin. And keep in mind that the gain for five minutes varies. So the calculation above is only valid if the average gain for five minutes is μBTC 100.
CoinWorker :: Win Bitcoins by completing analytical steps. A user account is necessary. I have not tried this service but the profits seem to be a little higher than with the pages already mentioned.
Bitfortip :: Win Bitcoins answering forum responses. This is a good service because it attracts people who are interested in Bitcoin and many other topics. At the same time, it allows you to pay in bitcoins for answering questions. This is something that would not have been possible without a currency like Bitcoin that has a low transaction price and instant transfer.
Earning Bitcoins by completing steps on internet pages is a viable option to earn Bitcoins. But do not expect your income to be very large. I consider it as a first step to familiarize yourself with Bitcoin in general. In addition, it is interesting to see what kind of services have been made available through a money transfer without problems.

Make a loan directly to someone you know. This allows you to personally evaluate if the borrower is reliable. Then the two only have to agree on terms such as duration and interest rate. The disadvantage is, however, that you probably will not find many acquaintances that are compatible with the amount, duration and interest rate that you demand and expect. But it's a good way to earn Bitcoins.
The Bicoin peer to peer loan pages with listings of several borrowers are another option. Bitbond is an example of a peer-to-peer loan page. Borrowers post loan applications and can contribute to the loan. You can finance small portions of many loans and in that way diversify your risk of loss. Bitcoin loans usually work in the same way as a traditional currency loan. The borrower gets a certain amount of money for a certain time and repays the money with interest. There are two things that you have to take into account when you make a loan with Bitcoins. The pages must be reliable and the borrower must also be reliable. When the page evaluates the creditworthiness of the applicants, the information disclosed about the borrowers can be more reliable.