Roasted Squash
PREP
Cut the squash to about the same size, keeping in mind uniform size allows the vegetables to all cook at the same rate. Smaller vegetables cook faster than larger vegetables. Toss with a little olive oil, salt, pepper, chopped garlic, and fresh thyme. The thyme doesn't necessarily have to be picked, just remember to remove them in the end, no one I know likes to eat bark, except of course for cinnamon, but that is a story for another day.
COOK
Heat oven to 400F. Place all of the squash on a sheet pan and place in the oven. Depending on size the cooking times will vary, but for the squash pictured roasting time should be around ten minutes. Just look at them, brown colorization is the key to roasting, otherwise it is just baking. When the kitchen smells amazing the squash are done.
Saute Squash
PREP
As noted above, cut the squash into similar size pieces. Do not salt the squash before cooking. Season with pepper or any other spice based on desired flavor profile.
COOK
Heat oil in skillet over medium heat until the oil begins to shimmer (waves). Test oil with one squash, if it sizzles, it's ready. Do not overcrowd the pan, or the result will be steamed squash instead of saute squash. Flip or toss and season with salt and chopped garlic
And if you make a mistake, make sure it only happens once. The best way to learn how to cook is trial and error, and in the beginning there is more error than trial...No Worries.