Creative Capital – Robust support for individual artists through grants and professional development.

New York Foundation for the Arts (NYFA) – A great online database for jobs, space, and opportunities for artists. 

Creative Exchange – Powered by Springboard for the Arts, a platform for resources including a free "Work of Art: Business Skills for Artists" toolkit

Fractured Atlas – Provides support to artists, namely through fiscal sponsorship and insurance.   

Marie Forleo – Marie is a knowledgable and experienced business expert that freely shares her advice and tips.

Artists U – An artist-run incubator with a free downloadable workbook on "Making Your Life as an Artist" 

Skillshare – Thousands of videos to learn just about any skills you could think of.

ResArtis – A great place for finding artist residencies.

Creative Live – An online platform to attend a wide array of free live classes covering various topics.

Lynda – An online resource for classes to learn skills primarily in software, technology, and business.

Launch Grow Joy – This link specifically has some great formulas and advice on how to price craft goods