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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.
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.