Specialty IV therapies

I am going to be starting out my career pretty quick here. in my interview, that went VERY VERY well btw, we discussed about IV things. I have a great way of doing general IV's and do very well starting them. This is something i have wanted to make sure i am perfecting so that i am able to bring something to my new job. ( having the paramedic background helped), well the NM asked if i would be interested in doing trainings for insertion of PICC lines. I am more than interested, but i am wondering, are there other things i would be able to get certified/licensed to do? like any other IV therapy/tx stuff that i would be able to do some research on and possibly pursue??

Thanks for the help in advance!
Heather