There's nothing more important that learning the fundamentals - stance, grip, sing use, trigger control, the proper steps to making a good shot, etc.
Also, once you learn the fundamentals correctly, practice COSTS NOTHING - you can dry fire in your living room!
There's a wealth of info out there:
Appleseed Project
Also, check out the "Guide To Becoming A Rifleman" sold by this guy:
Rifleman's Guide
I really urge you to check out the Appleseed Project, and try to attend one of their shoots. You will not get better instruction anywhere else for 5-times the price (I paid $80.00 for a two-day shoot).
At the shoot I attended, I saw one older lady (who had NEVER fire a rifle before that morning) who went from shooting a sighter group that was not even all on the target backer, to shooting a 1" group by lunchtime, just be coaching her in the fundamentals.
Usually they run their clinics at 25 meters, so you can do 'em with a decent .22LR. Most use a Ruger 10/22 set up with Tech Sights. Expect to shoot 400 - 500 rounds in a weekend. Better have a shooting coat - the USMC jobbie sold in a package with the "Guide" (above) works good, plus some foam elbow pads - you'll be spending a lot of time in prone!
But if you want to learn to shoot, this is the way.