Answer:
Without a bridle or a saddle across a thing I ride a-straddle. And those I ride by help of me though almost blind are made to see.
The more you take of me the more you leave behind.
One simple click, one simple flash. A piece of memory, for years I'll last. What am I?
I'm an old relative who's hand's can't hold anything and eyes can’t see anything
I go up and I go down, towards the sky and the ground. I’m present and past tense too, let’s go for a ride, me and you. What am I?
If it’s information you seek, come and see me. If it’s pairs of letters you need, I have consecutively three. What am I?