6 - Use the purse a little if there is no need to open it
Not sure what you meant by this point thou.
I think he means only open your wallet when you need to make a transaction
if you just want to check balances and other things, use blockchain explorer
4. Make backups of the wallet periodically
as HD wallet becomes standard now, you just need to make backup once in the beginning
better to say make
multiple backups then store them on different media and separate places