how do i get money?

[mathews0005]

how do i get money to buy things with?

[Charolotte Caxton]

The best way is to buy them.

You can also get a job and earn them.

You can play Linden Realms and trade crystals for them.

You can sell stuff on the Marketplace.

You can sell things inworld.

http://community.secondlife.com/t5/English-Knowledge-Base/Buying-and-selling-Linden-dollars/ta-p/700107

[Rolig Loon]

You can earn L$ if you are talented enough and can make items that other people want to buy, or if you have a special talent as a performer and can convince people to pay to watch (listen) to your work, or if you have a high tolerance for risk and deep pockets and want to speculate in real estate, or you can find games that pay you a meager sum to play them.  The absolute best way to get L$, however, is to buy them.  L$100 is about 40 cents US, so for the cost of a Big Mac, fries, and a drink, you can live like a king.  You can earn enough in an afternoon in RL to set you up for a long time in SL, and it would take you WAY longer to earn the same amount of L$ in world. So..... get L$ by saving your lunch money and bringing it in world with you.

[Lindal Kidd]

Two great answers!  And here is a blog post to check out, too:

http://acrossthegridwithlindal.blogspot.com/2011/08/jobs.html