How and where can i start a blog for a Multi Level marketing business?

What websites can i use, and are they free? I’m looking to get out my message about the business opportunity I have. I was told to start a blog and post my website that has all the information on it, or post my videos on youtube.com. My website has vidoes from the company that explain everthing in detail. I was also told to visit community forums. Where do I find these?

Can you help me:
1. how and where to start a blog
2. how to post vidoes on youtube.com
3. where do i find community forums, or forums for MLM

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