No, that will make the golf ball slippery and hard to play with.
As many as you want.
Green staked tree, Ground Under Repair, casual water, water in a bunker, animal burrow, cart path (check local rules though), embedded ball in the fairway, tyre print (from tractor or heavy vehicle).
The best golf balls for driving are distance balls, they fly a lot further, but there is a draw back for better players, they are not as good for feel or spin, that is why most players play something like a Pro V 1, they are quite long and great for feel and spin.
to play golf better
There are so many Chinese that play ping pong that I think there may be more table tennis balls.
The numbers are used to identify the golf balls while in play. That way players don't confuse the balls. At the beginning of the round, players should compare balls so that everyone knows what the others are playing with.
Golf nets are for people who play golf to improve their swing. You set them up and putt your balls into the net. You can purchase these online at Amazon.
George W. Bush
It is quite expensive to play at some golf clubs. Nowadays there are some clubs where it can be a litlle bit cheaper. Golf equipment can be very expensive but if you shop around you don't need to spend a lot.
No, these balls are not legal for use in competition. This is because these balls are sold as practice balls so the manufacturer does not make a request to R&A and USGA that they be added to the list of conforming golf balls, if they are not on this list, you can't use them. But I have seen people play with them in club competition and everyone seems oblivious that they are illegal.
What clubs are suggested to carry in a golf bag