I want to try using forkdelta but I am little confused, what their exchange is safe..?
How many minimum value for deposit, and how much fees for each transaction..?

Please share you experience with this exchange
I believe they have FaQ and many youtube videos, may I suggest you to read and watch everything?

Also, be very careful with decentralized exchanges, as it is required to enter private key, never use main wallet where all your funds are.