Simply walking to the nearest intersection and merely watching the driving antics is amazing. Keep watching and you may see TV's and Fridges and other unlikely objects impossibly balanced and secured with string on the back of a motorcycle. Watch how other people and local cross the road.
You will need to observe the traffic etiquette, if you want to cross the road. Some suggest avoid crossing when trucks and lorry's are close by, as they are less agile than motorbikes.
If your timing coincides with the to/from school hours, this is the best time to observe a glimpse of pushbikes, traditional clothing and ao dai mixing it with 'normal' traffic, even in the heaviest of torrential downpours. Such motivated schoolchildren!
As you travel about, you will find there are clusters of shops all selling like goods - like 20 sewing machine shops together, then 30 hardware shops all together, 200 motorcycle repair shops in the same block. Prices are competitive!
Be wary of watch shops selling original authentic fakes. Other fake watches are available but not as cheap as other surrounding countries. Pirated software is oddly, very hard to find and not sold openly. However Movie DVD's of indifferent quality are widely available from US$1, although not all may have English on them. The local post office will strictly not allow them to be posted abroad.
Vietnam claims Health tourism is on the rise. Hygiene, infection control and proper sterilization is very important, as drug resistant 'bugs' are always a concern, anywhere.