Download and print this pdf to practice right off the music.
A good start for beginners on the G. Learn to listen and place the finger on the right spot using the right technique from the beginning. Learning to play correctly from the start will simplify the learning process enormously.
Be conscientious of where your fingers are when you find the right pitch. Play while listening intensively over and over till you feel like you can feel the pattern. Memorize the feeling of first position and where your fingers are in conjunction to the fingerboard and curve of the scroll.
Don’t get discouraged too quickly. Learning an instrument is like building a house. You start with the foundation and it takes time. When you are almost finished you must work on the finishing.