Use the github wiki for setting up rAthena and SQL database:
https://github.com/rathena/rathena/wiki/Install-on-Windows
Use this version of Nemo:
https://gitlab.com/4144/Nemo
Use this version of English translation for newer clients/Renewal. Otherwise use the one located in the [Tutorial] Video Edition linked below should work but don't take my word on that.
https://github.com/llchrisll/ROenglishRE
Find a client version that fits your wants and desires best here:
Keep in mind ragEXEs are the client versions that work with Rathena. the regular rag and ZERO ones do not work. 20200409 seems to be the go to client version.
Use this guide for client side setup and other details:
You may have to edit your packet version to get the server to connect. There's a commented note in packets.hpp that you should read if you have to. Points you to edit a separate file.