Mining solo with a miner that consumed much power is not a good idea unless you have a free power source.

If you want to earn Bitcoins right away then mining on the pool is the best option.
Just take note of different pool rewards/payment methods some pools offer fixed rates and some pools offer pay per share plus mining fees. Most miner mining on a pool that rewards their miner with mining fees and altcoins.

If you want some more tips before you start mining read this sticky thread "First time/Small miner reference for getting started.".