well, my first concerto actually was the Hayden D Major at age 10 and it was one of my favorites and still is to perform neways. Since then I have done Gershwin concerto in f, Rhapsody in Blue and Gershwin's second Rhapsody, Khatchaturian concerto, Mendelssohn g minor, Tchaikovsky 2, and 3, Mozart 21, Beethoven 1,3,4, Rach 1, 2 and 4, and I am currently working on Bartok 2, and Rach 3. I noticed someone mentioned the Shostakovich 2 and I was wondering if neone had the score for that. alot of people mentioned the Grieg, I never did learn that one, because I never had the desire to learn it and I probably never will as I think that it is one of the worst pieces ever written and horribly overplayed as well as the Schumann. Neways wat I was trying to say was, the Haydn D Major is a wonderful first concerto and also the Mendelssohn g minor, or the Khatchaturian. Best of luck to ya.
Dan