How to Sell Bitcoin (and cryptocurrencies too)

With Bitcoin prices rised to new heights almost everyday (except for today it went down a bit as it supposed to be..), the question arises for people (or at least me) of how can we sell our Bitcoin and cryptocurrencies.

You see that getting into the world of BTC and cryptocurrencies are easy, you just sign up to an exchanged, create a wallet and transfer your fiat to buy some BTC and bunch of cryptos. And everyday, you can track the progress of your coins live. But then, when you want to cash in on your profit you will have a problem. At least for me the problem are the high fees that i have to pay and there is a daily limit of how much I can sell (of which makes it also difficult because if you lose time and money).

I found this article from CNN Money couple days ago:

"I experienced this firsthand on Monday when using Coinbase, a leading service for trading bitcoin. The exchange suffered a brief crash just as I was gearing up to sell.

Coinbase reminded its users of this risk last week on the day it became the most popular app in the U.S. "Access to Coinbase services may become degraded or unavailable during times of significant volatility or volume," the startup wrote in a cautionary blog post. "This could result in the inability to buy or sell for periods of time.

"Worse still: the skyrocketing price and interest in bitcoin has made it a greater target for attacks. Bitfinex, another large bitcoin exchange, said Tuesday it was trying to deal with a "heavy DDOS" attack.

And then there are the delays. Several days after I bought the original $100 worth of bitcoin, I purchased another $150 worth before deciding to put an end to my brief life as a bitcoin trader. It took a full week for the first transaction to go through. 

The second transaction is still pending.

Put another way: If the price of bitcoin were to plunge 50% this afternoon and I wanted to sell, I would be unable to sell the second batch I'd purchased because technically I still don't have it."

To be honest, I still don´t know what is the best solution for my question above. For example: If I want to to sell $2million of my coins, can I do it in one go? and how about tax implications for germany and Europe? 

Once thing for sure, I am keeping my coins as long as I could. The best case would be in the future when BTC and cryptocurrencies have gone mainstream, I could exchange my coins into hard asset (stocks, gold, house, land,etc) without ever going through selling it into fiat first...

what do you think?