How about I give you a quick overview
Ace Attorney first came out for the Gameboy Advance in 2001 (in the west) As a visual novel about a beginning attorney. You get to present evidence, question witnesses and get to make dialogue choices to ensure your client is found innocent. The franchise became quite popular and is highly acclaimed by many including me. Thanks to this the franchise has expanded quite a bit. It now has 5 main games released in the west, a spin-of about the prosecutor Miles Edgeworth, a cross-over with Professor Layton and since very recently also an Anime. It also got a remake on the 3DS that contains the first 3 games. Which is by far the best way to get into te series.