Hi there, I'm new to altcoins. Anyone has some usefull tips? Or a strategy that worked for you?
Your question is too vague, not clearly composed.
Are you asking for what altcoin is in general? or what altcoins are potentially successful and good for investment?
Or strategy like when to invest or when not to? when to hold or buy? or how to earn?
Anyway, you can hold for long term and earn great profits given that the coin has good dev team with real world application.
IN short do some readings.
Also you can buy altcoins when prices are low, that is perfect - but then again only those coin with potential.