Today I want to show you, how to gather bitcoins.
There are a lot of bitcoin mining pools, which you are able to use as a destination for your miner.
The first tool you have to download is "cpuminer", available on github . The second should be a "Mining Pool", i.e. GHash 
After registering on that Websites, you just have to start the cpuminer. The following parameter should be used:
./minerd -o URL -u WORKERID.worker1 -p 123 -a sha256d -q -t CPUs
For Example: (default all cpus)
./minerd -o stratum+tcp://address -u 123abc.worker1 -p 123 -a sha256d -q