Ruger .22 long rifle question

[Ruger .22]

Well I bought my first gun almost 2 weeks ago I have shot guns before this and this is what it looks like and that is my gun http://www.facebook.com/photo.php?f...48284161.17443.100002825902670&type=3&theater, and a video of it http://www.youtube.com/watch?v=HbgopMqSxkw, I want to buy a new magazine for it and a telescope sight so what size etc do I need to buy I am basically completely new to guns

 

[.243_Shooter]

You can find magazines in 10, 20, 30, and I think even 50 round capacity. The best brand are usually factory ruger mags available in 10 and 30 rounds.

Scopes size is generally a personal preference but I like lower fixed power scopes on my 10/22.

 

[Ruger .22]

Im thinking like ACOG or something like that