Where to start developing the next site?

Question

Monitoring

Good hour!
Please do not disregard my text. IMPORTANT...
I myself am not a guru in web development at all, so I will try to convey my thoughts correctly.
...I don't even know where to start...
We need a site of about 30 pages. Assumes a small array of information, the main goal is registration through referral links. Also the ability to enter the output of the currency.
The scheme is as follows:
Account A, called account B, B called C, C called D.
For each account, you need your own wallet.
Further, account D replenished his account / wallet, this action was noted by the system / site. And automatically transferred the amount to people A, B and C.
And now the question is how to implement everything? Where to dig, for what keywords? Maybe someone is already a guru in these matters and understands. Tell me, please!
This is not all, I would like to keep the site on my server, and the question arises which CMS to choose?
Also interested in the security of the site and server. Can someone comment on this (for example, builds of popular CMS on the Internet, they say they are not safe). I don't want to lose my admin.
In general, I will listen to any advice.
Popular comments, like Google to help, learn html, you don’t need to write in response.
Thank you all in advance!
PS I think for a start on wix to do, they say not to transfer later, since there are professionals.
And yet, there should be automatic manipulations with the wallet / account. This is the whole problem, how to achieve? For example, the Zabbix resource, will it help or is it not for me?
P.S2 Since there is no experience at all, or rather, there is, but very very little, and new variables appeared in my task (wallets, account activity monitoring, referral-unique account code), which are new to me, I have to figure it out. I'm waiting for your answers...

Answer 1

Well, if the site is commercial, maybe you should find performers who will do everything for you? You, as I understand it, do not quite understand this, in the end you are unlikely to get exactly what you planned. And the site has its own currency, even if Qiwi has found a way to drive your account into the red, then you can be hacked with an insufficient level of protection.