Step 1) To get started, go on an official website Magnum Wallet
On the first page press the IMPORT/RESTORE button. Then enter the existing private key and the passphrase, press IMPORT and download a wallet backup.
Step 2) Tap on your Tezos wallet and choose delegation option.
Previously created KT-addresses are shown as a grid at the bottom of a wallet page. You can tap on one to see detailed information about a baker.
In case you want to create a new KT-address select a baker from the list or insert address manually. Enter the amount you want to delegate and press NEXT. You need to enter your passphrase (from Step 1) and press CONFIRM. You will be charged approximately 0.001 XTZ and 0.257 XTZ for the network and storage fees which are required to create a KT-address and to send a transaction.
Create (if not already done) an account at https://wallet.tezbox.com
Step 1) Sign in to your account at tezbox
Step 2) Press “ADD ACCOUNT”. This will make an account that starts with KT1 instead of TZ. Only KT1 accounts can delegate. If you already have an account that starts with KT1 you can skip this step and jump to step 3)
step 3) This KT1 account is your account only you have access to it. Transfer your Tezos to this newly created KT1 account.
Step 4) Go to your KT1 account and press on “DELEGATE”. Next Select “Custom” and enter our delegation Service : tz1bHzftcTKZMTZgLLtnrXydCm6UEqf4ivca
finally press “UPDATE DELEGATE”
Now all is set and you will earn Tezos.
Go back to our website https://tezos.vote/Delegation and you instant can follow your KT1 account and monitor your progress