Random generation

Hello I have been working on a game concept for a few months now. I have made several small games befor but this is my first ambitious title.

I am having issues working out a nice clean way of generating my tile sets. It is an RTS top down but I want the world to be infinite.

But the more I think about it the more I am wondering if CPU power and ram may end up being an issue. Which in that case maybe just one huge map.

Anywhich way this is my first time using the forums as well as doing any randomly generated anything. And was wondering what steps I should take or what info u may be needing. Ty for the help