Once you have Monero in your wallet, when you send it it’ll be anonymous to the receiver and people won’t be able to look at the block chain and see people’s balances and transaction history. You can buy some monero on an exchange with your bank account and withdraw to get started with familiarizing yourself with crypto. Good enough in my opinion to at least learn. Exchange knows you bought Monero from them but after it’s gone from them, they won’t be able to trace around where you send stuff to

If it’s not available on any exchange you can easily move money into, you may just need to buy a different crypto and use another exchange/service to exchange again into Monero. There will be fees. Trocador is regularly mentioned from what I remember

Actual anonymous acquisition, you’re going to need to find a person in real life with monero to exchange something for it or you physical mail exchange and they send you Monero. Tough to find. Don’t know how LocalMonero is doing these days in usage/existence

Actually making payments, you got to find places that take it. Not a lot. You can pay for Mullvad VPN with Monero. Getting paid in Monero, 3 niches layered there. One is doing something people will pay you for, those same people being willing to pay in crypto, the people also having Monero. That’s tough.

Wallets, Monero website, you can probably trust Wikipedia Monero page to send you to the official website. On desktop you can download the software that downloads the whole block chain and it’ll have a GUI to send Monero and a place to copy an address for people to send to. Mobile, Cake wallet is popular

But really the hard part in my opinion is finding businesses and people that take and pay with Monero. You’ll acquire Monero to use but struggle to find places to use it for