Good evening, I would like to know what is the safest way to store altcoins.
I think good for you is paper wallet or desktop wallet those wallet are offline wallet if you can't afford nano ledger and trezor wallet. This is very safe storage of you're altcoins i guess, but if you wan't hardware wallet ledger nano s. and trezor have a private key always and don't lost it.
For you're ethereum the best wallet is Myetherwallet or MEW for ERC20 based token much better is this.
REMEMBER, to avoid leak of hacking or scamming always keep your private key and don't tell your friends for those closed to you.