I want to learn the Ukulele?

I played the violin for about a year and i had to quit cause i moved :( that was in 6th-7th grade. I'm an upcoming junior in HS and i totally forgot how to play the violin. I want to learn a new instrument, like the Ukulele. Can I teach myself how to play? and what kind of uke should i get (nothing too expensive cause i don't have the money...) for beginners?