Routing(natting?) to internet via private subnet

RouterOS Beginner Basics
1

Hi, as attempt to replace existing not-so-cozy iptables firewall with mikrotik I’ve encountered following showstopper:

some_user_lans(192.168.x.0/24) <=> my router <=> private_subnet /30(my router 10.0.0.2, isp gateway 10.0.0.1) <=> bunch of public IPs

I have this working seamlessly with iptables and even with pfSense on different location but without clue how make this routing/natting magic on mikrotik.
Assuming that it will be something pretty trivial but as far I can get is reach isp gateway. Any hints? Thanks.

2

Can you post the previous IPtables?

and your current firewall configurations form the mikrotik including NAT details
Also your routing table on the Mikrotik

Is the ISP gateway performing the NAT?
Is your router performing a NAT?
Can the Mikrotik router currently ping the web?
Is the router getting its IP 10.0.0.2 via DHCP?

With this information the IP rules should be easy to generate