If you want an easy yeast baguette recipe King Arthur Flour's website has a good one. (Rustic Baguette.) I haven't looked at the recipe in years, so mine is probably tweaked a bit.
Day 1: Mix 1 cup water, 1 1/2 c flour (white or wheat but white is easier to form,) and a few granules of regular old active dry yeast. Set aside and ignore for 12-48 hours.
12-48 hours later: To poleesh ( their fancy word for starter which I probably misspelled!) add 1 cup Luke warm water, 1 T yeast, 1 t. salt and enough flour to make a soft dough. You want at least half boring white flour or you'll have a glop instead of a baguette. The more white you use the easier it is to form the baguette so you may want to go 100% white the first time. I use wheat for the poleesh and white for the rest usually now. Kneed the dough adding just enough flour so your dough doesn't stick. Let it sit for 5 minutes. Turn over and fold it into thirds taking each side into the center. (Think folding a letter to put in an envelope.) Turn and fold into thirds from raw edges. Put the whole thing smooth side up in a lightly floured bowl, cover, and let rise until; double. When double, sprinkle flour around edges of dough / bowl so you can scoop out dough ball without breaking the top. Flip and fold as you did the first time into thirds both ways trying to never break that top. NO KNEADING! Put into bowl again and let rise until double again. Take out, cut in half, and form. Start by folding one more time in thirds both ways. Then from the center out, using the palms of floured hands roll the baguette shape. Cover with oiled plastic wrap until doubled in size. Preheat oven to 425 F and place a glass or metal pan with an inch or so of water in the oven to make steam. Slit tops of baguettes a few times and bake for 5 min. Then remove water dish and lower temperature to 325 F for about 20 minutes. When done, turn off oven, leave cracked or stick a wooden spoon handle in the ovendoor to keep it open a bit, and let it cool in there. You'll hear occasional cracking. That's GREAT! Easier than it looks. Total time Day 1 about 2 minutes if that, Day 2 about 4 hours, but most isn't hands on. Makes 2 baguettes or boulles.