so are they mainly used for like mixing it and getting levels etc?
Also, sorry for wasting so much of your time :? i don't know much about recording.
You can use them for mixing, but their biggest use is in tacking in noisy environments (like next to an amp). If youre in the same room as the amp you want headphones that both give you very good, clear and uncoloured sound and block external noise. About the best around (that I know about anyway) at that are Senn HD25-1s.
Its to have an amp in the background and still hear your click, previously recorded tracks and what have you, and be able to play and record and monitor your tracking real time without having speakers on, and the mic picking up the sound from them too.
But DI-ing, no mics involved, no amps involved, you dont need it: you just do it all through the monitors.
You can still use it if thats what you prefer, though.
It may be worth trying to see how youre most comfortable working: some folks like the headphones all the time, no matter what. If thats the case, get something cheap and cheerfull, but with high bang-for-buck factor, like Senn HD202s, and see what you think. If you like tracking with headphones, get some good ones. Try to make sure they're isoloating so that if you come round to recording with amps/mics you can still use them.
P.S. Its no trouble, happy to help.