There are many areas of study within the field of scientific computing. Examples of those areas include probability/statistics, cryptography, numerical analysis and algorithms. An abundance of information on these areas of study is available online.
Advances in the field of scientific computing affect our everyday lives. For instance, one goal in the study of cryptography is to learn how to keep our personal information completely safe whether we are dealing with an ATM or putting a card through a credit card reader. Discoveries and successes in the world of scientific computing are beneficial to society as a whole.