I agree that the Consolations would be the best. Nauges Gris would be another basic piece from his compositions (but to me, this piece is incredibly easy, and I can play it just by sight reading). To be honest, you can't expect to just learn pieces by Liszt and go through them without learning pieces by other composers first. His pieces, as Aide said, are highly virtuosic. It depends on your level of playing and your repertoire. The Macdowell Etudes are good, and I'd also recommend the etudes of Chopin, and the sonatas of Beethoven too. What pieces are in your repertoire?As far as pianists who play Liszt well.... I like Cziffra, as well as Maksim Mrvica, but many don't like him. Hamelin is also good, and I'm a fan of Horowitz too. I avoid Lang Lang like the plague. I hope this helps.
If you're just a beginner, you're going to have a long way to go to get to Liszt's more technical stuff. What Bach have you learned? It may not be a bad idea to get a teacher (if you haven't gotten one already). The piano and guitar are fairly different. But for basic repertoire by Chopin, Beethoven, and Bach, these are my suggestions:Bach15 Two-Part InventionsA sinfonia or twoChopinPreludes Op. 28, Namely Nos. 4, 6, 7, 9, 13, 15, and 20BeethovenThe 32 Sonatas. Op. 49 Nos. 1 and 2 are the easiest, followed by Op. 79Though overplayed, Fur Elise is essential to the repertoire.What I've learned, or always thought, is that playing the piano is like a food pyramid. The composers at the bottom of the pyramid are what you need the most of for a foundation of learning how to play, musicality, finger and hand strength, etc. In truth, you have to learn a fair amount of compositions by other composers before you can tackle all the advanced stuff, and Liszt wrote more technically demanding pieces than any composer that I know. The top of the pyramid, synonymous with sugars and fats on the regular food pyramid, are the pieces that everybody loves to hear and play. The "sweet" stuff. Foundation (Bread): Bach, Mozart, the basics of Chopin and Beethoven, Bergmuller, Heller2nd Level (Fruits/Veggies): More Bach, the Sonatas of Haydn/Beethoven/Mozart3rd Level (Meat/Dairy): Intermediate works of Chopin (waltzes, nocturnes, etc), Always more Bach, Schubert, Schumann, etc.Top (Sugar): Chopin/Rachmaninoff/Liszt Etudes, Scriabin, Ravel, and so forth.These are just my thoughts.