As shown above, this is how my default graph looks like. I want to use the graphs to edit videos and do twixtor. However, the graphs issues is giving me a problem. I couldn't drag the yellow point all the way out like how majority of the tutorial videos that I've seen. Hence, I can't really make a smooth twixtor. Basically, I can't move the graphs however I like.
Meanwhile everyone's default graphs looks like this:
You are looking at a speed graph. The other one is a value graph. Value graphs are useless for things like Position. Speed Graphs are more useful for more properties than value graphs. Maybe this tutorial I did will help you understand the Graph Editor a little better.