AutoLISP programs can be very simple in nature, executing a few commands that you might commonly use throughout the a day.
They can also be very complex, extracting and formatting information from blocks, and constructing the extracted information into a table. When you first get started, keep things simple and then once you feel comfortable with AutoLISP then start looking at conditional and looping statements.
When you begin to develop an AutoLISP program, you should keep the following steps in mind: