Coinbase/GDAX will want more personal information than you’ll feel comfortable giving them; there is no way around this. The more information you give them, ID, Bank account, credit card, etc., the higher your limit and the less restricted your account will be. Don’t let this scare you off from becoming a cryptocurrency investor. Every other exchange user went through this process; you have to also. Since you have to trust someone, Coinbase/GDAX is a good bet.
OmiseGO (OMG) is a public financial technology that’s based on Ethereum. The concept of OMG is to enable peer-to-peer value exchange and payment service in real time across not only decentralized currencies but fiat money as well. OmiseGO allows anyone on its network to process financial transactions (payrolls, B2B, remittances, payments, etc.) in a much more inexpensive and decentralized manner.
A “manageable amount” is obviously subjective and will vary for each person based on things such as time available to dedicate to trading. Feel free to do your own research to find the right exchange for you. I tend to value user experience of an exchange over the amount of coins on it. Ultimately, what exchanges you use is going to depend on your own personal preferences. GDAX and Poloniex will provide sufficient resources needed to be a successful trader, so they are definitely a good place to start.
On Bibox, you’ll be able to trade only in the form of crypto assets hence, no space of fiat exchanges. It allows you to trade cryptocurrencies in markets like Ethereum, Bitcoin, Tether, and Dai. What makes Bibox unique for your choice is its use of smart AI algorithms for ensuring optimal trades. Moreover, you can trade on Bibox with its very own token offering.
Don’t get itchy fingers (AKA be wary of FOMO buying). As noted above, if you have a strategy, stick with it. Sometimes the market will go nuts, and you’ll see epic gains, and you’ll get FOMO (all humans get FOMO, it takes discipline not to react to it). Selling or buying at that time may make sense, but don’t get nervous and switch up your whole strategy without thinking about it. That is often when bad moves are made. If you are going to buy heavily or sell heavily on a whim, consider taking a step back first.
I prefer to trade on decentralized exchanges. For myself, I made a choice in the form of ethnermium.сom. They have a huge number of coins. There are no minimum restrictions on trade and fees are so insignificant that you will not notice them. I also think the advantage of the easy creation of a wallet like MeW and easy integration with metamasks and a high level of security
Disctric0x is a network of decentralized communities and marketplaces, and where each ‘district’ is a decentralized entity on the district0x Network. In other words, District0x allows anyone to create a network of communities (or organizations) with a focus on governance, cooperation and decision making being decentralized. District0x is an open-source software project, and as such, it does not seek to gain profit, but rather focuses all of its attention towards building software that enables development and governance of marketplaces that are powered by the community.
I’ve met so many people that are speculating in crypto these days that have never even read Satoshi’s white paper on Bitcoin. Not only are they not practitioners (tech experts), they even are too lazy or too blinded by greed to even do a baseline level of work. There are many easy ways to quickly get up to speed on crypto and educate oneself you just have to do the work (one of my go-to resources is a company called Oddup which is an ICO/Crypto rating company used by all the major crypto hedge funds and institutional players).
Consider Diversifying. With the above advice in mind, there is nothing worse than getting frustrated with BTC, moving to ETH / alts and missing a BTC price spike, then moving back into BTC and missing the ETH spike. This is very easy to do given the rotation, and the natural urge to “FOMO buy.” If you have some of your funds in all the coins you trade, you’ll avoid missing out on a unicorn (a term one can use to describe an odd event, like a giant price spike in a short amount of time). If you diversify, especially when prices are low across the board, you’ll avoid some of the urge to jump into one coin mid or late into a run and out of a coin just before it goes on its run. In other words, although it isn’t the most profitable tactic, diversifying is good for one’s sanity in a number of important ways.
To read Part 6 of BTCManager’s ‘A Guide to Trading Cryptocurrency,’ click here. In this trading guide, we will introduce you to a useful concept that can be used for trading, amongst other things. Linear regression is a simple, easy-to-use strategy that can be utilized to identify entry and exit points based on the price action of the cryptocurrency. What…

Now I have my strategy that I stick to without letting my emotions interfere. I have a set of coins that I like trading so I only look at those charts. I have patterns and indicators that I look for on those charts so I can quickly flip through them. Within minutes I can set my orders, set alerts on my desired entry and exit prices, and walk away from the computer.

We are still seeing the bulls grind EMA 4 hour support, but they have to break the lower highs to see continuation and shift momentum. The bears continue to hold the upper paw as long as the lower highs remain. The daily chart continues to tighten and this weekend it will be worth watching other alt coins in daily equilibriums to see if we have any initial ...
If you’re not careful when it comes to cryptocurrency trading, you could find yourself gambling more than you’re trading, and eventually you might lose all your money. Trading is not a game, and just as there is real money to be made, there is real money to be lost. Doing your research and keeping the following concepts in mind when trading could help you avoid the pitfalls of cryptocurrency trading.
U.S. Government Required Disclaimer - Commodity Futures Trading Commission. Futures and options trading has large potential rewards, but also large potential risk. You must be aware of the risks and be willing to accept them in order to invest in the futures and options markets. Don't trade with money you can't afford to lose. This website is neither a solicitation nor an offer to Buy/Sell futures or options. No representation is being made that any account will or is likely to achieve profits or losses similar to those discussed on this website. The past performance of any trading system or methodology is not necessarily indicative of future results 
Bitcoin (BTC) is King/Queen; Don’t Get Overly Optimistic About Altcoins. Those who invest in BTC tend to get itchy fingers when BTC stagnates and alts go up. Sure, going into IOTA or ZCash can be a brilliant move at times… at other times you’ll be holding the bag while everyone moves back into BTC. Stick with coins you know and like, but consider always being partly in BTC (not 24/7, but in general). This advise applies somewhat to Ethereum as well, but first and foremost BTC is the center of the crypto economy.
Investing in any currency is an activity that, roughly speaking, can be done in two ways: the speculative, by means of short sales (buying and selling currencies several times in one day depending on the possibilities of the price going up or down), Or by developing a medium- or long-term investment scheme (i.e buying currencies and saving them for a longer period to sell them when appropriate).
EDIT: #10 Bonus (Suggested by @kerstenwirth ) — always check the ticker symbol. Ticker symbols are not universal, and may vary from exchange to exchange in rare cases. Those cases, though, can come back to bite you. For example, Bitcoin Cash trades on some exchanges as BCH, while it trades on others as BCC. BCC is also the ticker symbol for BitConnect, which was recently outted as a Ponzi Scheme. If you bought BCC under the impression was Bitcoin Cash, you would’ve lost a lot of money.