Which lease agreement form is best to use in California? Is it the one that the California Association of Realtors has? Does that form allow for adding a clause or addendum? I've read that it's difficult to add additional conditions or clauses to that form. My other investor friend said his attorney recommended the CAR lease agreement form. 

Also is DocuSign the best platform for signing lease agreements? I've used it for work before.I've heard of WeSign also. So far I have one tenant for a SFH and I guess I could use paper and pen but I'd be printing out a lot of paper. I'm not the most tech savvy person so whatever signing platform is easier to use and doesn't cost a lot of money would be preferred.