Yes the AM-510 is a good meter at a great price. It would be hard to find a better basic meter at that price. Even the AM-570 is a good deal too, except for its accuracy specifications. For a beginner any of the series would be suitable, and safe. You will also have advice from many people that having two multimeters is an advantage as you can measure two things at once, voltage and current or input and output for examples. It is also helpful for some measurements to have True RMS capability and the AM-510 does not have this.
I assume from the fact that you are considering Amprobe that you are in the US. It is easier for us to make recommendations if we know where you live.
What is your maximum price?
Other meters to consider:
Uni-T UT139C, TRMS,still lower accuracy, full featured, $50 shipped to your door
Amprobe AM-270, TRMS, very good meter, higher accuracy, poor back light, $120
Brymen BM257s, TRMS, the favorite of many owners, higher accuracy, $135 shipped to your door
BK Precision 2709B, TRMS, still lower accuracy, $90
If you can spend the money, my personal recommendation would be the BM257s, but you can't go wrong with any of the Amprobes you have considered, nor with the ones I have recommended. There are others too but I am afraid of confusing you with too many options.
As far as more features making it harder to use? Generally this is not the case. You can just ignore the more advanced features until you want to use them or need them.