I gotta share this recipe in case y'all don't know it. You can make an expensive potion that sells for a lot, levels alchemy very fast and is a great poison for marksmaen really easy and really cheap. Rummage through all the barrels and build up a supply of salt, go to Morthal and walk the swamps collecting all the Deathbells you see. They are bright purple and all over the place. Then go to Riverwood and collect all the thistle you can find. Put on any alchemy enhancing gear you have and mix those three together to get Slow with Stamina damage. It slows 50% with a duration variable and adds stamina damage. If you hit a bear in the head as it's charging, the bear will stop and stare at you as you kill it. It will significantly slow a sabre cat. But the best things is that it sells for a lot and just a few will raise your alchemy a point. The ingredients are so common and easy to get that you can bump up Alchemy as fast as your patience for mixing potions can last.