Sites to get you started,  by all means add those you know about in the comments section! Many of these offer help with finding support groups or LLMDs. 

LymeDisease.org Begin with Lyme 101

Tick-Borne Disease Working Group (US Health and Human Services) 

International Lyme and Associated Diseases Society (ILADS) including excellent lyme treatment guidelines from the experts.

Bay Area Lyme Foundation

Stanford Hospital

Igenix Labs testing

The Dean Center for Tick-borne Illness (Boston)

Lyme and Tick-Borne Disease Research Center, Columbia University Medical Center

lymeinfo.net [English, Spanish, French]

National Capital Lyme and Tick-borne Disease Association

LymeNet Europe

CanLyme

Texas Lyme Disease Association

Florida Lyme Disease Association

Michigan Lyme Disease Association

Martha’s Vineyard Lyme Center

Lyme Disease Association of Australia

Lyme Disease UK

Lyme Disease Action (UK)

Cauldwell LymeCo Charity

Ohio Lyme Aware

Pennsylvania Lyme Resource Network

Financial Help

The Lyme Test Access Program

LymeAid 4 Kids

Blogs

Lyme Chick chronicles her experience as a young person battling lyme; she offers straightforward insights, plenty of encouragement, and tips for better healing through her words and thoughtful videos.

Lyme MD writes candidly about his experience treating lyme disease.

Redhead Kelly brings us the most recent posts from dozens of lyme blogs—wow.

And here is an important phone number:

National Suicide Prevention Lifeline

24 hours a day, English and Spanish:

800-273-8255