Honestly it is so rude to think that you can just magically obtain lindens without putting some effort into earning them. Just like everything else in life, you have to EARN it to get it. Like the previous commentors said, the fastest way is to pay for them with RL currency, which does not normally come to too much. If you are unable to do that, you should settle for completing tasks that allow you to gain your lindens. That is how I earn the majority of my funds and the tasks really aren't difficult at all.