You can always go back and learn the rest of them as you need them or when you have mastered the various formulas you are using on a regular basis. There are many different formula used in Excel to create spreadsheets and manipulate the information you place within them. Over time and with a fair amount of studying, you will come to understand how to use them all. Technology has changed so much since last century and all of us who live in this competitive age are forced to use it. How exactly can you fully utilise technology so that gain the maximum benefits from them?
In terms of features, NeoOffice (donations accepted) is huge, truly a viable alternative to Microsoft office. It includes all the basic components: Writer, the Word processing component; Calc, for spreadsheets; Impress, the presentation module; draw, for the creation of graphics and diagrams; and Base, the database component. The spreadsheet component has some sophisticated features like Advanced DataPilot technology, Natural language formulas, an Intelligent Sum Button and a comprehensive range of advanced spreadsheet functions.