You may be able to get a Model 17 instruction manual from Remington, or find an original or reproduction on ebay. Here is the cutaway from the 1940 Remington parts catalogue --

and an updated 1946 parts list.

Looks like you have a nice old Model 17. Just a gentle cleaning and lubrication should be all it needs. Remember, first do no harm!!
Interesting that the butt plate shown in the parts list is a Remington - UMC style. The company name changed from Remington Arms - Union Metallic Cartridge Co., Inc. to Remington Arms Co., Inc. before the Model 17 was introduced. What is the company name on the barrel of your gun?