Tàrrega's preludes are charming miniatures, often featuring delicate melodies and rich harmonies that evoke a Spanish Romantic sensibility. They are characteristically idiomatic for the guitar, translating beautifully to the piano.
Emphasize a singing tone (cantabile) and careful attention to harmonic color and balance.
2 Preludes is rated Henle level 4 of 9 — intermediate repertoire, roughly ABRSM grades 5–6. In the RCM system it corresponds to about level 6.
You should be comfortable at Henle level 4 — meaning you can already play level 3–4 pieces cleanly. Learning it one level early is possible as a stretch piece, but more than that usually leads to months of frustration.
2 Preludes is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.