First, you need Adobe Flash which costs a bit of money. Then, you'll need a tablet to connect to your computer so you can draw storyboards and animatcs. After that, it's the time consuming process known as puppet animation. The puppets are all free that you can download from different places on deviantart. Also, there are some free animation tutorials on Youtube on the channel where double rainboom premiered that go through all the basics of animation of ponies with flash. My number 1 tip: patience. Animation takes a LONG time.