Google Advanced Search and ipl2 can both be very helpful for finding reliable websites for your Persuasive Speech. See the Informative Speech/Websites page for information.
These Library databases are recommended for most Persuasive Speech topics. Find high-quality, reliable information from journal articles, newspapers, and websites.
See the box below this one to watch a video tutorial that will get you started with Opposing Viewpoints Resource Center.
For EBSCOhost and LexisNexis Academic, go to the Informative Speech/eReference and Articles page and look for the tutorials.