You don't need "money" to register for an ethereum wallet. What you probably want is an Ethereum address, and since you don't have Ethereum nor know how to "buy it" I assume that you want to get some airdrops or similar. No problem.
The simplest way, not the safest, is to go to
myetherwallet, read all the splash screen that tell you about safety and all. It is all information that you should start understanding to be safe.
Now, by default you'll be on the tab "New Wallet", just set a good password with numbers, uppercase, long... you know, make it strong. Then hit "create new wallet".
In a few seconds you will get another screen that tells you to backup your private key. Do so. If you loose this file you will loose all funds and nobody will be able to help you recover them. If someone gets this file, you funds may be stolen. KEEP IT SAFE. Never give your pass, never give your private key.
You file will look like this: UTC--2018-02-23T15-18-54.589Z--029e49fb289e41dd3dbcfb09a928093efaf09aed
Now you can continue. You will now be shown your priv key. something like 4e73b93269c22e220b816167067b96a72eaadac0bb275942ae903d0b13bad0f9
KEEP IT SAFE. Never give your pass, never give your private key. Print a paper wallet or save your key safely. DON'T LOOSE IT.
You now have a wallet. To get tokens or ethereum you
will need to give your PUBLIC address. Now, continue by opening your wallet. Choose the option "open with... private key". Paste your private key. You will then unlock your wallet and, scrolling a bit down and find your public address. That one, you can give freely and that is the destination address for any ether or tokens that you want to receive.
"Account Address 0x029e49fb289E41Dd3dBcFB09A928093eFaF09aed" notice that it always starts with 0x