you build on your house
Wood cutting. In my opinion, Prayer is arguably the fastest skill to train. However, Prayer is also very expensive. The same applies to Herblore and Construction.
Depends What skill you are training.
A saw is a tool that is used in the "Construction" skill.
If you read the Runescape skills manual you wouldn't ave had to ask this question.
Click on the Construction skill and it tells u, if it doesnt tip.it/runescape
Non Yet
Mining Guild, there is no other better place to train the skill.
Just create a new account and do quests that give you defence exp and train just defence skill, then train attack skill.
It means that it is an area where you can train the crafting skill.
For this kind of questions, better use an online skill calculator. Search Google for the terms [Runescape skill calculator]
No, if you are talking about the ones built during the construction skill - then definitely not.
Its free to play skill but if you are member you'll have more things to train which take short time