Fresh yeast, the stuff that is bought from a bakery, should be blended with the warm water with a little sugar, and left to start to bubble in a warm place. Dried yeast that looks like little balls should be sprinkled onto the warm water with a little sugar added and left in a warm place to dissolve and start to bubble. The yeast feeds on the sugar and is then ‘activated’ and starts to produce carbon dioxide gas. This is what makes the bread rise.
The ideal temp for the water and the place for the yeast to start to bubble is blood temp, ie 37centigrade. Too cold, it will take longer to work, too hot and the yeast will be killed and no carbon dioxide gas produced.
The fast action yeast/easy blend yeast HAS to be added to the flour and other dry ingredients, NOT to the water. I think this was probably your mistake.
When the bread is left to rise in a warm place, the yeast continues to feed on the natural sugars in the flour and produces more carbon dioxide. This makes the dough rise. It is possible to let the dough overprove/over rise in which case the dough will collapse, rather like a burst balloon. You can just leave the dough to rise in the kitchen, covered in cling film, it just takes a little longer.
Once the dough is put in a hot oven it will rise a little more until the yeast is killed. The dough will then stop rising and start to brown.
I hope this helps. ( Guess what subject I used to teach in school?!)