I've never ever tank swapped or really done much of anything outside of dungeons. I understand the theory behind swapping, carefully managed mitigation, snap add pickups, and so on but I'm worried about my ability to execute. To actually do those things. I've never done them.

So basically I need hands on practice...

DFs of ex primals don't get far enough for it to matter. My raid leader kinda wants me to learn trial-by-fire style: throw me right into fcob. I've used gear as an excuse until now but if RNGsus likes me enough or next week by poetics, I'll have i130 in the major left slide slots (Leg slot is the main deficiency right now...). So soon I won't have that excuse...

But I might choke on that much humble pie at once...

What's the best way to get that hands on practice, without pissing off 7 other people I will see again?

Are there any particular ex trials that are easy for a newbie to pick up quickly (but not faceroll) but will give practice with these things? Or other things like that?