If you have a Hashimoto's diagnosis and are not sure where to go next, here are my 3 recommendations. 

1. The book "Root Cause" by Izabella Wentz. 
Here is the amazon link I discuss 
https://www.amazon.com/Hashimotos-Thyroiditis-Lifestyle-Interventions-Treating/dp/0615825796/ref=sr_1_3?crid=1DEHIJASMK02&dchild=1&keywords=root+cause+hashimotos+thyroiditis&qid=1633902373&sprefix=root+cause%2Caps%2C189&sr=8-3

2. Phoenix Helix podcast  
https://www.phoenixhelix.com

3. Here is the link to find a functional medicine doctor 
https://www.ifm.org