To become a trader you have to a good study first about trading search on google and watch more video about trading. And if you already watc this and do research you can now start trading, buy low and sell high that was the most  basic lesson in trading and in that way you already become a trader. Good luck and welcome to crypto world.

I'm keeping the majority in BTC and EHT but have some alts on the side because I'll lose more if I convert them now.
Waiting is the best thing to do now.
And investing in some new ICOs if you really like the idea behind it.
Market never stops.

It is more profitable to buy an ICO before it goes on a price boom but to figure out those ICO's are really hard, it is riskier to deal with ICO's than to invest on a crypto that is already been established on the market having a working product top 10 on CMC most likely but the profit is more rewarding and proficient if joined the right one giving the opportunity to be an early adopters to the token.

There are so many good ICOs this month, very promising if you have the courage to invest.
my doubt is, some ICO come with great achievement but roadmap is not running. Coins fall and are worthless, it may take 5 months to get back to normal. how to survive in this situation?

Mining might even end you up with losses. Mining bitcoin for now isn't worth it in terms of profit if you're using GPUs(unless you're just planning on mining to help the network). Buy the coins instead. Mining can only be worth it as of now if you're going to mine certain altcoins.

I'm trading only at the most popular exchanges, such as Bittrex, Poloniex, Kukoin. First of all, I advise you to pass the verification before you start trading

In my case, technical Analysis never worked when used alone, at least in the crypto market and commodity market but if it is used with fundamental analysis, it somehow greatly contributes to the success of the prediction and sometimes throws it off. For this same reason, I only use technical analysis only when I cannot decide using fundamental analysis alone.

In my opinion, Trading long is less risky and save your time.
Just keep 50% of your budget into long trading, buy potential coin at low price and hold, it can make profit double or 3x, 4x in 1/2 or 1 month.