How to work with GPS

[ahkeong_m]

Hi

I got no idea on the GPS, but after getting some info regarding the benefit of it if i carry it along with my RTW motorbike i think it will be a very useful tool. So hope you guys may give me some advise:

1. Any good recomendation of a good GPS gadget? clear at day time and sharp at night view.
2. Is that the GPS real time with our current position not matter where we are? even in the desert?
3. Is that we need to pre-load the related area map so that the GPS gadget can show where we are? if it is, how can it do that since it seems like we cut it in the middle way and want it point out where is the way we should go....
4. Will the map shows up even in the undeveloped area such as Myanmar? or as long we got the softcopy of map, it will works? if like that how could we get all the map because no body will go and develop the non-profit area
5. Will we need to pay for the use of satelite for positioning?


Hope kindness from you to answer my doubts

ahkeong