50Miner is a graphic interface for back-end miners. It supports both most popular cryptocurrencies: Bitcoin and Litecoin. Only your 50BTC login and password are necessary for mining. No installation required, miner can be extracted and you can have it on your flash drive. All settings can be saved in the configuration file.
https://50btc.com/en
Bitcoins are emitted with 25 BTC payment for the person that found a correct solution of some block. There is a really strong competition for gaining the emission payment. If you are mining your bitcoins independently, it may take a very long time for you to earn 25 BTC. Mining pool allows people to cooperate with others participants and aggregate computational resources. Participating in the mining pool gives you an opportunity to accumulate bitcoins gradually, but regularly. If your computer and graphics card are not very powerful, pooled mining is the only way for you to earn bitcoins.