Not financial advice, but when I first started I went for Bitcoin and Ethereum and still to this day I really like them. I haven't spent much time with Alt. coins but would love to hear from some people who have experience in Alt. coins and what to look for when investing in them. 

Not financial advice. 
What currently I'm doing is to buy Bitcoin all Fridays (I don't look on the price), my strategy is wait 7-8 more years and see what happens with my investment. 
Also, I only invest money that I am willing to "lose", not money that I need in short term.