Looking for advice.

Hello everyone, first time poster

I’m looking at buying a “starter” WWII Kar98k, something like a M48 or Russian capture variant. I’m sure I can find the proper resources on what to look for when buying the gun. I am slightly lost on what resources (books, manuals, etc.) and products I’d need to maintain, clean, and store the rifle once I get one.

Also, if anyone could give me some pointers or suggestions on what to do once I receive the rifle I’d appreciate it.

Thanks in advance!