there are so many cryptos and I find it hard to identify the ones where I should have a closer look.
Obviously one can find cryptos e.g. by listening to shilling on Reddit. But I'm looking for more professional sources like YouTube channels, free/ paid Telegram/Discord groups and so on. What do you use?
First do some research with ICO's rating so you know the project is good.
Second is to evaluate it, so many new ICOs that arise, will capture the attention of investors and invest cryptocurrency investment, but many people will surely fail in the absence of evaluation.
Thirdly how good their plans are, this is certainly the most important thing that will determine whether investors will be interested in coming to them.
Which blockchain is built, the new ICO should be launched from the existing blockchain, unless they plan on building their own blockchain.
The chain of coins was constructed to determine which crypto is there to be used to participate in ICO.
These are just a few of the things you have to look into, there is still so much to do that you do not become the victim of a scam that makes shitcoin.