Hi @juank, and welcome to our community forum!!
Same here! 
You should do as shown in https://welcome.dappnode.io/
Also you should set up an ETH2 full node from here http://my.dappnode/#/system/repository
While it takes its time to sync you should have a look at
But be careful! the tutorial is focuses in Mainet, but you should first try staking in Pyrmont testnet (not using real ETH).
Also have a go at the FAQ and How-To categories in the forum, as well as some random threads under Support and - last but not least- use the forum search before posting a new thread
Hope this helps you to feel very welcome to our community! 