I am staking ARK for a month now. Yearly income is about 10%. It is really simple to setup wallet. Transfers are very fast. The client app is easy to use.
- Buy some ARK from markets.
- Install wallet app
- Transfer your coins into your wallet
- Vote for a pool from list (I've voted yin.network since it is set to 100% payout)
You will pay 1 ARK for voting. I think this fee is set to prevent pool jumping. So, if you want to change your pool, do not do it before earning transfer fee.
Some pools are paying for your vote fee if you want to change. If you have more questions please ask. I will try to explain more.