Use the arrow keys or WASD to move. You usually need to talk to Twilight to finish quests by the way. (In depth quest guide coming soon!) The two locations that you can go to from the train station are Ponyville and Canterlot. Simply talk to the grey conductor pony and type where you want to go. Click the music note in the top right corner to mute/unmute the music.
I've never watched Friendship is Magic, so I'm completely relying on the Wiki here, sorry for any errors or inaccuracies. This game is still a heavy work in progress! I've only made like 7 quests, and I haven't finished drawing the backgrounds. Excuse any glitches that you might encounter, I'm slowly but surely working on fixing them. Credit to akumath on DeviantArt for the pony sprites. They will probably just be placeholders until I get the time to draw the ponies. (Yes, I'm probably way too old to be obsessing over My Little Pony, but It's fine) With all that said, hope you enjoy the game! (More horror aspects are on the way!)