unless you are an experienced trader i would advise NOT investing in any altcoins under any circumstances because the risk of losing money in this market if you don't have experience is pretty high. and if you have experience then it is best to first invest in bitcoin and familiarizing yourself with that. after all everyone knows that bitcoin has the biggest potential and so far it has been giving the biggest returns.
then you can start trading altcoins if you feel confident and experienced enough.