Your friendly local public library. I like to start in the reference section.
One can find information on sailing on a laser dinghy by going to a sailing club meeting or by reading newsletters put out by members of the club. One can also find information on the internet.
You can find information on reasonably priced sailing vacations at the Sun Sail website. Alternatively, you can also find cheap sailing vacations available from the Sailing Ship Adventures website.
Sailing. You would say "We will be sailing next Tuesday"
You would not use a sailing ship.
This question lacks a few pieces of information. A) Saturday 30th of which month? B) Sailing conditions where?
the sailing around the world map
By sailing yacht it would take a week or two, depending on the wind and weather when you are sailing.
If you were sailing and ran into a river cataract you would have to get out and go around
Africa is a massive continent, so it would depend on where exactly you were starting your journey from. If sailing from the north coast, you would come to Europe. Sailing from parts of the west of Africa, it would be North America that you would come to first.
The best place to look for a used sailing dinghy would be through your local sailing club. Dinghies may also be advertised in specialist sailing magazines or in local papers.
No
You would be racing a sailing yacht.