Microsoft has made available a list of tips and how-tos for SharePoint, Sharepoint Designer, and InfoPath and of course, all the other Office products as well. Best of all, they are available by RSS feed, so you can have them delivered right to your mailbox.
You can choose which feeds you would like to subscribe to. Some of the most recent posts have included:
· How to Design an InfoPath Form based on XML Schema
· Create a workflow initiation form
· How to use variables in workflows
· How to export Excel data to a Sharepoint site
· Connect a Query String Filter to another Web Part
For a complete list of feeds and to choose what tips you would like to subscribe to, visit http://office.microsoft.com/en-us/help/CH102069101033.aspx.