Is any of the following deductible?

[Wayne Solum]

I just sat through a seminar hoping to find clear answers to the following, but didn't:

Are closing costs associated with a cash-out refinance on my primary residence deductible in whole or in part for tax purposes?  The funds were used for real estate investing.

Can a real-estate investment club membership be deducted as a business expense?  I used their real-estate agents and purchased two single-family rental properties in 2015.

I've tried using the search box up above but it's not very helpful.  Surely there's a better tool for this.  I'm sorry if the questions I asked have been asked numerous times.

Thanks,

Wayne