Range in a multimeter
The meter will typically read to zero on the ohms ranges. 

You should not use it on an unnecessarily high range, because the resolution of the reading and the accuracy will, in general, be lower than necessary. So if there is a usable lower range, it's usually better to use it. 

For example, you have a resistor marked 15K, you'd want to measure it on the 20K range, so the meter shows 15.0K rather than on the 200K range so the meter would show 015K. 

You can find the manual here, and the accuracy specifications for resistance are given below: 



So, in the example I gave, the accuracy is +/-0.8% + 2 digits on either range. The uncertainty on the higher range would be +/-320 ohms, on the lower range it would be +/-140 ohms, so more than twice as accurate.