For example there is one guy who is very popular on youtube who tells his followers "I won't take you seriously and won't teach you anything until you set up an LLC and start a business".

I'd recommend a "Templates Folder" that has templates for common used docs like leases, notices, advertisements for properties.I actually just did full video on my Google Drive set up over on my YouTube channel :)

James, I watched your YouTube video referencing this post.

I'm thinking about renting the basement room and share the kitchen. my question here is what are some requirements or tips when renting a room 

Quote from @Chris Williams: For the people who use buyer's agents to find their cash buyers to dispo wholesale deals are there any tips that you would provide for me? 

@Melinda BarrettWelcome to the community and be ready for a huge amount of information at your finger tips.

Everyone's tips have been so helpful thus far.

What are your go-to non-Biggerpockets Youtube channels for REI? 

Thanks for the tip!

Welcome to the community and be ready for a huge amount of information at your finger tips.