What do you recommend for an inexperienced person ?

I have just made 7k usd profit in 3 weeks from xrp but i don't trust xrp because of some reasons so that i researched other altcoins to make an new investment journey, eventually i decided on steemit because of active community and my prediction of future. Actually, i have no idea about cryptocurrency untill 3 weeks ago. I know btc but it's just a name for me and i have improved my self in cryptocurrency for 3 weeks. I'm a undergraduate student who want to take master degree so that i need to make more profit in a year. What can you suggest for me for my investment journey?
(i'm sorry about my english. I hope, i made myself clear)