Nice tips you got there but I think your tips are lacking something. One of the most common mistake a newbie does is to invest in only one coin which in the end leads to loss if that certain coin does not perform well. That being said, you should have had included there this: "diversify your investments. Never invest in one coin only and always remember to not put all your eggs in one basket".
That is true do notninvest in only one coin tje more you are keeping yourself safe you are gonna be in trouble because if that coin fall them all you money will be in danger they will fall too and you cannot get that actually you can but of course not the same value as you put it there. So put your eggs into different baskets tjere are altcoims they are not successful yet but they will be. Do not rush things out and learn to wait for a long time because if you are closer to give up you are closer to the goal so dont be stubborn.