I have a wallet in blockchain.info. I'm quite new to bitcoin and would be happy if someone would explain me :
(1) what should I do in order to save my bitcoins if something happens to blockchain.info. Can I access to my bitcoin with ANY wallet, if I know my address and private key, or if I know my address and password? if so, how do I find my private key?
(2) I've also noticed a backup option in blockchain.info wallet. If I use it, can I get access to my bitcoins with this backup, with every wallet? should I save a new backup after every transmission of bitcoins from my blockchain.info wallet?
(3) Wha'ts the best way to prevent a situation where a malware "reads" my password when I enter it?