Re: Better marksmanship?
Don't let them scare you. You don't need to spend a lot of money learning to shoot. Regardless of what venue you choose you have to get the fundamentals down first.
I really like NRA or better yet ISU Small bore for the fundamentals, but again that's expensive.
Next best thing is NRA Light Rifle or CMP Rimfire sporter. The rules preclude high priced rifles. They are designed to be fired with the 22s most people have in their closet.
CMP Affilated clubs put on Clincis taught by CMG GSM Master Instructors, not only in Vintage Military Rifle but Rimfire Sporters. They are low cost clinics but very good. GSM Master Instructors are taught by Gary Anderson, Olympic Gold Medal winner in ISU.
Also check out the CMP GSM (Garand Springfield, Miliary) matches and clinics. Most have loaner rifles to get you started.
As I said, LOW Cost. I conduct clinics and only charge enough to get my fees to the CMP covered. Thats about 22 dollars spit among all the students.
As far as books. Check out the CMP Bookstore. Start with the AMU International Rifle Marksmanship Guide ($6.95)
Also check out the Service Rifle Guide, and Squad Designated Marksmanship DVD ($6.95)
CMP Book Store
https://estore.odcmp.com/store/catalog/catalog.aspx?pg=catalogList&cat=BKS
The CMP and CMP before that have been mandated by congress to provide marksmanship training the American Citizens since about 1906, funded by sales of surplus rifles and equipment.
Take advantage of it.