-continue researching into anything that interests you, other projects and coins and their roadmaps, teams, etc. It doesn't hurt to learn about markets and technical analysis. People will only shill their holdings and advise you to buy those to better their position. Learn about the best way to protect your investments and you seem to already be doing that with adding a Ledger Nano. Good luck.
-Before investing, read as much as you can. Also you should take into account positive and negative comments.
Never sell altcoins, if the price is less that you have invested. It's better to wait in order not to lose.
-The main advise for newbie is not to try to trade. It's very hard job even for experienced guys.
The second advice is that you should always diversify your risks. Make 2 portfolios. The first one is for long term hodl, the second one is for ICO investment. Each of them should consists of 3-10 coins/projects.
Add in advices that you want to give.
