5 of the Biggest Mistakes Nonprofits Make By Andrew Olsen, CFREPosted March 24, 20190 Comment(s) Last week I wrote this post on 5 of the Biggest Mistakes Nonprofits Make that was shared with the NonprofitPRO subscriber community. It gives you an inside look at my new book, 101 Biggest Mistakes Nonprofits Make and How You Can Avoid Them. I hope you enjoy it!