Getting started on the web stack - Office Dev PnP Web Cast
If you're scared by the recent announcements for SharePoint developers, you shouldn't be. You can modernize your SharePoint skills easier than you think.
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What you should learn to prepare for developing solutions on the SharePoint Framework
Microsoft has just announced the SharePoint Framework - a new model for building SharePoint solutions. And although you can't start building solutions using it just yet, there are quite a few things that you can start learning today to be prepared when the new framework becomes available.