Secure seeds can be generated on
https://iotaseed.io!
They're based on mouse entropy, and paper wallets can be generated too!
...Or you can type your own seed... It's not hard... 81 uppercase letters and a few 9's mixed in.

Not saying this guy is a scammer... but DO NOT trust anyone with your seed unless you see the source code or create it yourself!!!
Literally just 81 random characters, A-Z and 9s