I highly highly suggest you pick up the book "Vegetables Every Day" by Jack Bishop - it is a great book and gives a few simple and yummy recipes for most common, and less common, vegetables. I bought it the year before we bought our house knowing we were going to be growing more of our own food and that meant I needed to increase my veggie repertoire. They're not complicated.
We do a lot of roasted veggies for the most part and I've learned to love things I used to not like. I found that really reducing our sugar consumption (which I'm guessing you already do) also made a big difference in how good veggies tasted.
I also learned to start putting veggies in everything. Making eggs for breakfast, add peppers, onions and spinach or maybe asparagus this time of year. For dinner, replaced rice with shredded cauiliflower cooked with coconut oil and seasonings, yum. Or we'll do sliced cabbage cooked in butter. We have out go-to veggies of broccoli, greens (cooked with some bacon drippings usually), carrots, peppers, and asparagus (in season). We also really like roasted parsnips too, they're like a carrot and potato combined. I really just chop up a lot and add them to whatever we're cooking too - so curries with get various veggies tossed in along with stirfries too.