Yeah if you dont see anything around, by all means pull a T. You may hear some bitching, but when you get a Chain 5 for 350 after that or something...you can then turn around and say shut up. You will honestly learn the most as you go. I never really used a guide for pulling...you just get a feel for it. You sound smart enough to grasp the concept already...so the future should be no different. When you start getting told to stop pulling is when you will run into difficulty. Ive had some bad encounters when people said I pulled to fast. We rarely (if ever as I recall) died from me overpulling, but some people had a problem with me not waiting for full mp. There is a time and place for such, that is after a Chain 5 minimum. Some parties are not equipped or able to do so, no matter the situation...those parties should be ended quickly.
Regardless, you are still in the dunes. You will run into plenty of people that will annoy you as I said. Just stick to it. Youll get it down, or you already have it down. Pulling is great fun I always thought. There is nothing like having a long pull, around many aggro tending mobs and coming home safe. There is nothing like being able to run through a the dunes as a Whm because you learned how to avoid aggro. Avoiding aggro is a skillset not many get to learn to master...but is honestly one of the most useful I have ever seen.
As for the huge exp...I have never been able to achieve much more than 6k in a "normal" party. You will run into a term called cannon party. This is a party geared totally for offensive output. Few jobs have enough offensive output to form a cannon party. Blm and Rangers can because they have high dmg and ranged attacking abilities. Monks can on bones (undead) because they hit for disgusting numbers extremely fast. The only thing I have heard about for thief is doing nonstop SATA with like 4 or 5 Thieves. I have NEVER seen or heard of this happening, but have read about people's theories on it. But you can hit some good numbers if you set up parties right.
Best of luck to you... You are facing a hard task as it is. Starting at this point in the games timeframe is hard as the inflation and expectations on equipment are extremely high. Just stick it out...things get much more fun in the mid levels.
Fae