Please note: I’m not an expert. But I can pretend.
Yeast can be intimidating to those who have never used it, but I promise it is not difficult. Recently I passed on a recipe to a friend and she commented that she’s a yeast novice. It seems I have taken for granted the Mama-instilled knowledge of how to work with yeast!
To help my friend, and y’all, I will show you the basic principles of yeast and how it will change your life.
To start, you need to buy some yeast. It comes in envelopes, jars, and (more uncommonly) yeast cakes. I have never laid eyes on yeast cakes as they are more for commercial operations and bakeries. But you’ll be fine with the envelopes or the jar, easily found in your grocer’s baking aisle.

Note: 1 envelope of yeast = 2 1/4 tsp yeast from the jar.
I keep my jar in the refrigerator. Because of this I always proof, or activate, the yeast before using it. Some types of yeast are already active in our times of new fangled food technology, but I follow the school of “always activate the yeast, especially if it was cold in the refrigerator”. It won’t hurt it and will make your dough extra fluffy.
To activate yeast, you need 3 things: warm water, yeast, and a source of sugar. Sugar feeds the yeast so even if your recipe doesn’t call for sugar, adding just a pinch in with the warm water and yeast will really help things along. However, if your recipe doesn’t call for sugar but does call for milk, you don’t need to worry about adding extra sugar since milk naturally has sugar in it.
As far as the water, you can usually run your tap until it is hot and that should suffice; there’s no need to use a kettle or microwave. If you’re worried, buy a cheap candy thermometer and check that the water is within 10* of 115*. Any hotter and you run the risk of “killing” the magical powers of yeast.

Combining the warm water with yeast and sugar begins the activation process and you can sit back and relax for 5-10 minutes. Or you can sit over it and watch it curiously bubble and become foamy, as I do. I’m fascinated by yeast, actually. The above picture was taken after about 5 minutes and you can see how it looks cloudy and bubbly. I ended up letting it foam up for a few more minutes, but as long as it starts looking like I have shown above you’re on the right track to yeast success.
When the time has passed and the yeast is bubbly and foamy, you are ready to add in the rest of your ingredients and bake away! Just follow the recipe’s instructions to form the dough.
When your dough has come together, you should let it rise in a warm place, covered with a dish towel. Do this according to your recipe. If your kitchen/house is naturally cool, I suggest turning on your oven for a few minutes to bring some heat to the area and then you can place the covered dough in a bowl on or near the cooktop.
This,

will become this:

The best part of working with yeast is punching down the risen dough to knead it again!

At this point, keep following your recipe instructions and you’re ready to bake amazing breads! You can freeze yeasted dough once it has risen. It should rise again while thawing in a warm place.
See? Yeast is not that intimidating! And now that you’re a brave, brave soul and are ready to use yeast, check out my recipes and have at it!