At first u won't know how to exchange ur dec and u will found it complicated. But after u figure out about hive blockchain and how its work u would found it easy .
So let start explain how step by step to people wo still have problem to exchang dec or cash it .
At first u have to know that when u buy spellbook in splinterlands they create u an account in hive blockchain ,that means that u will already have a hive wallet where u can stor ur" dec " no need to another wallet .
So step 1 : you need to request your wallet key from splinterlands by click in ur icon profile and click in "request accunt key "make sure to save that keys
Step 2: sign in hive engine with ur splinterlands name and owner key
Step 3: withdraw amount of dec that u want exchange .
Step 4 : exchange " dec " to" hive" in hive engine market, and u will get "hiveplug "
Step 5: u can swap it to ur favorit crypto and withdraw it to ur personal wallet ,or withdraw it to hiveblog wallet also its have been created by splinterlans , all u need to do is click on withdrawa" hiveplug " and u will found ur wallet name=splintelands name u don't need a memo .
Step 6: if u withdraw hive to hive bloge wallet ,then u can transfer hive to binance platform trading if u have an accunt
Me i exchange it to hive then i send it to binance trading app to turn it to cash .
I hope this will help people that they found hard to exchang" dec" like i was