HubSpot’s free online marketing resources are invaluable for anyone in the business. The resources that HubSpot offers for free are better than many that I’ve paid for in the past and I would recommend anyone with an interest in online/inbound marketing to check them out. They offer a great blog, whitepapers, classes, website tools, presentations, webcasts, videos – a huge amount of online marketing material and tools. All are high quality, informative and free.
Check them out: http://www.hubspot.com/marketing-resources/