When I started playing around with video game development, I just went out and grabbed a free version of Unity and tried out a few of their tutorials. You should be able to pick up text generation fairly quickly as they teach you HUD elements very early on.
I hear Unreal has the same sort of tutorials as well, but I haven't had time to try those out yet.
Both are free and the tutorials are relatively easy to pick up.
i7 5960X @ 3.8 GHz | Corsair Vengeance LPX 16GB DDR4 PC2800 | GTX Titan X Pascal | Win 10 64 bit | Asus ROG PG348Q | EVGA X99 Classified