I don't think there's a newbie guide for such a setup... Basically because this isn't a newbie thing to do.
The websites you see are usually running a full node (sometimes patched) and use rpc commands to communicate with their running node in order to build their site... It's possible they also parse the data their node wrote on disk in order to build their site.
If a full node is to much, i know you can do about the same by running electrum (and maybe other spv wallets) as a daemon on your server.
Here's some info:
for bitcoin core:
https://developer.bitcoin.org/reference/rpc/for electrum:
https://electrum.readthedocs.io/en/latest/jsonrpc.htmlI checked those out, but they are too complicated for me. You're right, it ain't a newbie thing to begin with. I'll give Electrum a shot; I think it's easier for me. Thank you, bro
The bitcoin network is an independent and decentralised network. Other networks or websites don't run in the bitcoin network neither does the bitcoin network run in other networks. If I may, you are actually likely refering to a centralised exchange that allows you deposit in a a said address you claim is yours without having the keys (since they literally control your keys).
When you deposit in that address, they wait for the transaction to be confirmed on the bitcoin network or lightening network as the case may be and then the allow it reflect in your balance on their CEX website or wallet.
As for you idea of setting up an exchange or a website that accepts bitcoin payments or deposits, I suggest you contact a good developer and team .
English isn't my first language, so I don't know how to express what I am thinking, but yeah, like you said. All the developers I find on Upwork, Freelancer, and Reddit are basically useless. They ask for too much money and want a regular license, which is something I won't agree to until the site reaches one year. Where can I find experts who will do this work without asking for a bucket of money and a license?