[Serious] Advice on mining, is it worth it still? ETH, XMR

Hi just wondering what kind of coins you all think are currently profitable or maybe worth investing in, my college teacher is mining abit of ETH at the moment so I kinda wanna give it ago, is it best to mine LTC, ETH or Monero I'd probably need some kit to be able to mine can anyone give advice on getting started or other good things to invest in.