You've received great advice. My girls are 2 years 4 months apart, and to be honest, it was very difficult during those first newborn months. Some things I didn't see coming:
-taking baby home in the stroller. Ella had a huge meltdown when we loaded the baby up in "her" stroller. Hadn't even thought of that.
-breastfeeding: it's the one time that you really can't just drop everything to attend to your toddler.
-putting baby down for a nap: okay, so I guess this is another time you can't just drop everything to tend to toddler!
-transition times (normal for any toddler, exacerbated by baby): leaving for work and coming home were very difficult, especially since Anna needed to be nursed about the second I walked in the door.
Some tips: keep an assortment of snacks in containers that she can open and that hold an appropriate serving in a place she can access during times you are busy. Create some sort of ritual for before, during, and after stress points you identify for your daughter. For example, if you know when you'll be nursing and that this is a trigger for meltdowns, spend some time with your daughter just beforehand- something special like reading. doing a project, etc. Next, create a short list of special things she can do only while you're nursing- maybe it's TV, play-do, or using some special markers. Finally, after the nursing, show her affection and how much you appreciate her patience or how special she is.
Good luck! It's not hard in the beginning for everyone, but It was for me and for a few of my friends. The good news is, it does pass, as does everything, for better or worse!
J.