1. What are a few good Crypto exchanges?
2. what are some good Hardware wallets?
3. I assume that when i send crypto to my hardware wallet, i use the wallet address ? so any wallet i choose this can be accomplished?
4. from what I understand that when I use a hardware wallet , the crypto I purchase is actually not on the wallet but stored on the block chain?  if so, could the block chain be hacked? has it before?
5. what is the most secure way to store crypto?