I'm trying to join MegaBitCoin and they want my bitcoin address. Unfortunately, Blockchain.com isn't available in the US so what can I use instead?
Why do you want to join megabitcoin? That's not a safe website, any website that deals with casino or money doubling aren't safe, you can lose all your funds
Bitcoin wallets are of different types, we have online wallets and decentralized wallets, the difference is private keys, any wallet that don't give you private key or Mnemonic/recovery seed when setting the wallet up is no good, they are called online wallet.
Here are few safe wallets for newbies
1. Coinomi wallet
2. Trust wallet
3. Copay
4. Bread wallet
Go on Google play store and download any of the above, remember, keep your keys or recovery seed safe, if you lost your phone, with the private key you will recover your fund, that's why online wallet aren't good, once you lost access it's goodbye