SOFTWARE ON THE NET - various types of software available - commercial software (pay for it) - shareware [nagware] - freeware - open-source software - keeping safe - have anti-virus software - when you choose to download a piece of software, typically you'll be given the choice to SAVE or RUN/OPEN the file. SAVE is safer, because your antivirus software has a better chance of scanning it - just be sure you remember where you saved it! - types of files - executables (.exe, .sea) - compressed files (.zip, .sit) - programs contain usually an executable and auxiliary files - how to install software you download - executable installers - lead you through installation step by step - just double click on the installer that you downloaded (.exe) - ready to go executables - very simple computer programs that only require one file - not too common - zipped file archives - file that contains other files, like a folder or directory - but compressed - need special software to view them (winzip) - look for a README file, it will tell you what to do next - some contain installers or documentation files and the executable - self-extracting archives - similar to a zipped file archive, but no special software needed (its builtin) - double click it, it will expand and create a second .exe file, which is usually the installer or executable program - might also create a README - activeX installers (often not seen) - specific to IE and windows - was designed to make process as simple as possible - download and install in one step - because of its simplicity, great way to get viruses - be careful! - because of these risks, activeX programs can be digitally signed by the creators - if your browser doesn't recognize the creators, it will ask you - IE will ask you if you want to install and run the program - do you trust it? - spyware and adware - spyware "phones home" and reports on your activities - spyware that displays ads is called adware - usually by registering the product, the ads disappear, but the program could still be spyware - file download utilities - winzip and zipcentral for opening .zip files on windows - stuffit expander for the mac - software clearinghouses - FTP software archives - give gutenberg example - search for shakespeare, as you like it, - 1399 - ftp.aol.com - managing software - restart your computer as needed to recover RAM and speed up processing - optimize your hard drive (defrag) - keep device drivers up to date - don't load too many apps at once - use an uninstaller - software reviews on the book