1. Determine if you are required to file a tax return. You are required to file a federal income tax return if you are a citizen or resident of the United States or a resident of Puerto Rico. Your marital status, age, filing method, and income all affect whether or not you are required to file taxes.
proficiency testing. proficiency testing. a program in which specimens of quality control material are periodically sent to members of a group of laboratories for analysis, with each laboratory's results compared with those of its peers. See also: proficiency samples.
Perhaps now you are curious to learn how programmers write software. A program is a set of step-by-step instructions that directs the computer to do the tasks you want it to do and produce the results you want. Programming helps you understand computers. The computer is only a tool.