These are all basic knowledge that every cryptocurerncy investor should know but i think there is one more thing that i can add. Due to the high volatile crypto market it is advisable to invest into a cryptocurrency that has an ecosystem which uses the token as a utility to help regulate the value of the cryptocurrency from dumping.
Can you give example of those utility tokens that you prefer? I know few but you should your suggestion with an existing coin of your choice. It's a good advice you got there because that what tokens/altcoins created for, to be used by the people in different ways that it can.