I’ll tell you up front – I’m a huge, huge fan of Craftsy.com and I have bought many classes (mostly knitting but a few photography and cooking classes as well) over the years. Here’s a round up of some of the free digital pdf books available at Craftsy in a variety of topics – a great way to try out a new hobby or gain some new techniques with a hobby you already love. These are in no particular order but all are free as of this writing.
Bread Making Basics
Beginners Guide to The World of Watercolor (despite having the last name Paynter I have not done any painting or drawing since middle school but I’ve always wanted to try – this might be my new hobby for 2016)
Sweater Design Guide: 20+ Ideas for Your Next Project (considering how obsessed I am with yarn and knitting – knitsessed? – you know this is the first one I downloaded)
There’s plenty here to start you off on a new hobby, dig into a current hobby or even reignite a passion you’ve had in the past.