As we all have seen ripple has been quite strong these past few days and with all that it has done over the past months compared to most other currencies and the launch of xrapid is actually starting to show in its price.
There is so much talk about ripple taking over bitcoin and being 10$ what are your thoughts on this ?

yesterday there was a shift in position between XRP and ETH in coinmarketcap data. XRP managed to defeat the ETH and was in second place at that time.
and now XRP is back down and displaced again by the ETH.
Are there any assumptions about that?

If Bitcoin is king of cryprocurrency, then Ethereum is the king of all ICOs ,do you agree?  Stella,neo and no other blockchain has hosted ICO than other than Ethereum.

Although the whole market is red, I'm very much afraid of holding ETH now. In my opinion, ETH was fluctuated to its ATH when people were more interested investing in ICO. Nowadays ICO is almost dead. That is why it has less demand. I don't think it will get another ATH soon.
What's your thoughts on it? Should I hold now?

As you have likely gathered at this point, Ethereum was built to be more than just a blockchain to hold the Ether cryptocurrency token and confirm transactions, Ethereum was built to be an open source and decentralized blockchain-based software creation platform that any developer can use.

At the core of this platform/network is a “blockchain-based smart contract system,” to which one contract type is the native cryptocurrency Ether (which trades under the symbol ETH). However, unlike with Bitcoin and its blockchain, Ethereum’s platform is designed to run code rather than just account for coins.

With that in mind, Ethereum can be used to do a range of things. It can be used make multiple unique cryptocurrencies, to do any type of contract, and even be used to create/store blockchain-based apps.

This can result in unique tokens/cryptocurrencies that aren’t Ether (but use the Ethereum network) like Augur, Golem, Aragon, etc, traditional contracts like insurance contracts (“contract” is a term that encompasses many things here; it goes beyond just basic contracts), and even software (like a Minecraft like game that is now hardcoded into Ethereum’s blockchain; a DApp).

With all that said, let’s go over some more Ethereum facts to move beyond what we have covered already:

    FACT: Ethereum-based tokens can be traded for Ether on the EtherDelta token exchange. This is useful for trading new tokens from ICOs as soon as they launch.
    Stoked on Ether yet? If not, check out this list of reasons to buy Ether.
    TIP: Ethereum is the system, ether is the token, despite this… most people refer to all of this as ethereum and use the terms ether and ethereum interchangeably.
    DID YOU KNOW? You can actually create your own token right now (via tokenfactory).
    FACT: Ethereum initially launched as an ICO. Meanwhile, many ICOs use the Ethereum network.
    FACT: Ethereum currently uses a Proof of work model of mining, but they are switching over to Poof of Stake. Learn more.
    FACT: Another name for a cryptocurrency is “token.” Ethereum’s native token is called “ether.” Ethereum’s “ether” token trades under the symbol ETH and it is what most people think of when they think of Ethereum. Learn more about ether from ethereum.org.
    TIP: Developers can “fork” off the Ethereum blockchain and create their own tokens (these may have different names in practice, for example KIN). Meanwhile “ethereum classic” is the original ethereum cryptocurrency. Ethereum classic still trades on cryptocurrency exchanges and can be used as cryptocurrency. A new investor probably just wants ETH (Ethereum’s ether) and a digital wallet like MyEtherWallet (or a coinbase account with a built in Ethereum wallet).[8]
    FACT: Ethereum is a popular choice for ICOs due to its capabilities. About 1/2 of ICOs use ether-based coins.

Ethereum is young in relation to bitcoin, its market capitalization continues to grow every day. Ethereum became very popular when many tokens started using their smart contracts. Many ICOS are based on the Ethereum platform. Will it be more stable in the future? What do You think about this?

So I have seen Coinbase is the main "source" for buying/selling BTC, but I was wondering if anyone has used the method of converting bitcoin to another currency when it reaches a high point, then converting it back to BTC when it is low enough.

If so, what wallet(s), exchanges, etc. are you using? And more specifically, what crypto do you recommend converting BTC to, in this situation?

Any help is appreciated!