I'd strongly recommend starting with the non-profit Addgene's guide to CRISPR (https://www.addgene.org/crispr/guide/ https://www.addgene.org/crispr/guide/). A

I'd strongly recommend starting with the non-profit Addgene's guide to CRISPR (https://www.addgene.org/crispr/guide/ https://www.addgene.org/crispr/guide/). A great place to start and accompanying blog posts keep up to date. Also a great place to get the DNA building blocks, libraries, etc.