is there any way to reward people who answer your questions

i hear people talk about rep & bump or points or something like that. is there anything that the person asking the question is supposed to do in regards to those things?

The middle icon in the upper rt corner of your post is the rep button.

Cash in an envelope's equally flattering...

If you look at the top left of someones post, you should see a Scale Icon. If you click it, a menu will open asking what you want to give the Reputation for or add any comments:



Tutorials however are slightly different, it is at the Top Right of the post, but any comments from the tutorial are normal.



You may not see it on some threads/posts/forums because it may be abusing the rep system.

More Information can be found here:
Reputation and Badges