If you're thinking of ring classes take a look on OSRS Gold the wiki. The ones that are most useful are the melee classes. After the floors are frozen, comes the first set of abandoned floors.
1 , 2. Dungeons are quite slow at lower levels , so it's unlikely you'll earn many xp. Find out how quickly you do dungeons and how much xp gain you'll get on average per dungeon. C1 or C6 depends on the rate. If you can finish C1 in two minutes and you get 55xp, then C6 that takes 20 minutes with 650 xp is more efficient levels of xp. 20 minutes/2 minutes = 10. 10x55xp equals 550xp in the same amount of time C6 could earn you 65xp.
Every-time you complete your maximum floor you should reset. "Do I attempt to do the smallest floor for every class?" I'm not sure what you want to convey by this query. It is common for people to rush and gain more xp but doing all rooms may be more comfortable. It's your choice. You can earn xp bonuses based on the amount of monsters you kill and for the rooms you enter. The amount to enter rooms is higher than killing monsters. So make sure to go into every room , but only kill monsters if you desire or require it.
That's personal question. What do you enjoy doing more? Training in a single spot or dunging to learn a variety of things? Fractite is the equivalent of dung of rune you can use it at level 40. The method of training depends on it. If you're following an instructional guide, you can probably complete the majority of them in one day. I'd bet at around 10 hours play time for each one, except for the three you have mentioned.
It depends on what you intend to accomplish. A stronger strength is usually used by those who are able to pk/duel. The range and the mage are at equal in strength, but it will not change your level of combat except if one is able to Buy RS 3 Gold take over combat in melee. normal oak - willows is usually the standard for woodcutting classes. I would consider selling oaks, however willows, I would use to make firemaking.
