1 - for trade I do the following:
first step Is identify the currency, in this case I trade ETH - USDT. I check ETH's ANN Thread to see if there is any news, then I check all ETH social networks and then I start doing technical analysis.
2 - for the case of investment (I don't do that much) of new altcoins
I check the team members and the whitepaper and then I research what the team members have already managed to do in the real world, then I check if what the project intends to offer will attract a lot of demand or not and if it already has many better competitors
2.2 - In the case of investing altcoins that have been around for a long time in the market, I first research the ANN thread, then search the altcoin social networks to see if there is any good news capable of generating a big price increase in the coming months and what the project have in special compared to other altcoins