Wow, where to start!
Here's a few pointers;
1 - Always use 2fa on exchanges you use and use a different password for each
2 - Research from multiple sources about each coin you are interested in
3 - Dollar cost average in, don't buy all at once
4 - Buy a mix of alts, don't put all your eggs in one basket
5 - Never post details of how much of each coin you have
6 - For now, avoid icos are they are the highest risk
7 - Invest, don't trade.
Pick your projects wisely and just HODL your alts my friend