I am totally beginner in mining and which graphic cards to you advice for mining Ethereum and Litecoin, also I think maybe I will also try to mine Monero an Zcash.
What do you think about Radeon R9 390 and rx 580?
Those will be good for dual mining Ethereum/ETC (Ethash) + DCR/Sia. Check out claymore's dual mining program.
Nvidia cards do better on Zcash (Equihash) and I think Monero (Cryptonight) as well.
There will be little profit in mining Litecoin.