I am new to these ICO's and Crowdsales.  From what I read on this thread.  Sending BTC from coinbase doesn't work?  So does that mean I should buy BTC on Coinbase but then send BTC to a BTC Wallet and use the BTC address from that wallet to use for the crowdsale?   Which is the best wallet you recommend?

Also I havent been able to find out how much I need to send to crowdsale? Is there a minimum or a set amount?