I'm figuring this is your first child, right? One thing I would stress is "age-appropriate expectations." Extremely important concept for parents, and one you need to learn about . Get some good books about child development that list the stages for each age and you'll find that at 17 months they just aren't ready for flashcards, books or color activities. And she won't be ready for any of that for a long time yet, so relax and stop pressuring yourself to do anything as dry as flashcards with her just yet.
They ARE ready to explore, explore, explore with hands and feet and eyes and ears. So do things her way -- if she wants to push around things, find more things she can push around, and be sure she has plenty of safe spaces to do it so you are not constantly saying "No, no" -- she needs to hear yes, not no, when there is not safety involved. Get her stimulating toys that have more than one function or more than one thing to manipulate, pull open and then shut, etc. She may love to start fitting the square thingy onto the square peg and the round one onto the round peg -- you don't have to tell her constantly that those are "square and round" to teach her; her brain will start to figure that out without the labels. Same for colors. When you hand her something just say, "Here's the red chicken!" and eventually she'll know that red is that color on that chicken.
DO read to her a lot. Let her turn the pages (even if she turns backward or to the wrong page). Run your finger under the words as you say them, every time. She will begin to connect the sounds you're saying with those squiggles on the page. Do talk to her all the time, too. About anything, even the news of the day. She doesn't have to understand every word, but she does need to hear speech all the time. When you're out at the coffee shop with her, point to the word "Starbucks" and say as if to yourself, "S, Sssstarbucks, S" while you touch the S. Do it as if you're saying it just for yourself -- that used to get my daughter's attention, if I seemed to be "learning" the letters and not always just forcing her attention onto them!
If you "set a firm schedule and have her try these new activities" like flashcards and "day care type activities" you will only frustrate her and put her off such things early on. Right now, play IS her learning.
Again, get some good books on development and seek out books with ideas for how parents can use play -- not academic types of work -- to help kids learn as they play.
My daughter got letters and numbers and colors etc. pretty early and I didn't really do anything formal, but I did do a lot of "You put the green ball in the basket and I'll put this blue ball in the basket!" and talking and talking and reading and reading to her.