ArchLinux dedi. server HELP PLEASE :(

contact me through PM on my steam for a more indepth descript. me and my team are having a very hard time going from an OVH windows box, to this OVH Linux box, its so different, we cant even figure out how to remotely connect to it.
PLEASE NO COMMENTS SAYING
"shuldve stayed with the old box"
or
"now u'll learn ur leson"
or
"if u dont know what ur doing u shuldnt be using a dedi box"
everybody starts sumwhere, and im just in need of in depth tech help.
thanks for reading