After reading hundreds of articles, I've got a decent understanding of the way bitcoins/blockchains work. Now, I'm starting a pretty large project that at it's very core basically will accept payments from anyone anywhere in the world in any currency with any bank account. The idea is to convert all these local currencies into partial bitcoins and store it in a single wallet (?) and process it further. It's a spin-off off this company that is making profits (https://www.bitwala.io/) but I want no money to do this purely because I find it incredibly amusing and want to make this technology accessible to anyone anywhere with a smartphone and without worrying about wallets/blockchains and all that. So I come here in hope of some answers that can point me in the right direction so I can get started.

1. I understand how that company (bitwala) is operating by buying and selling bitcoins in different countries' exchanges to convert currency, but from a programming point of view where do I begin?

2. I want to abstract the entire working of bitcoins and wallets to the user and as far as a regular user is concerned he would be just making a payment using his regular bank account. Is this possible to accomplish? Say you just pay with your credit card and I take this money in whatever currency it is and process it through an exchange and convert it to bitcoins into my wallet, before converting it again to another currency? Again if so, programmatically speaking where do I begin?

Any help or any information would be really helpful and this is with the idea of me investing another year or two of relentless programming this to create something that I have in mind to make people's lives easier, so any criticism/help is welcome!

This is like a hybrid between a petrol/diesel and electric car, with the hundreds of different currencies circulating about, the greedy middlemen corporates and banks are so keen on ripping people off trying to juggle money between currencies, and as long as currencies still exist, there needs to be a single simple no bullshit no middleman raking profits kind of solution and that's along the lines of what I'm trying to build here.

thanks in advance