I'm going into my second year of teaching but I remember the nervous feeling well, to be honest I feel nervous now as well! I didn't really do much research beforehand other than discussing my (many) concerns extensively with the module coordinator and others on the teaching team, but really I think the only way to learn is on the job. In my opinion it is quite difficult to read up on teaching approaches without having something to reflect on; I went on a short course during reading week (beginning of November) and found that helpful as I'd already taught for a few weeks beforehand. If your university does courses then that would be useful for you as well.