we got a cook book that gave recipes for things, but that was closer to 6 months and above.
what we started on right away was cooked and blended up vegetables, like peas, carrots, potatoes, cauliflower, stuff like that. a really good tip we got was to buy a new plastic ice cub tray (or a few) and then make up a huge batch of the veggies and then once they're cooked and blended, fill the tray up with the veggies and freeze them, so that you have individual portions to give her each time you want a meal, and then it's just a matter of heating them up in a pot for them to eat.
if you have a few you can make them up in advance and have a few on, giving one a night, and see how it goes. we have a raft of videos from when my daughter was around that age of the first time she ate stuff. really good fun.