Jeff, I hear your plight. My first years of beekeeping (and still today) were very overwhelming. There is so much to understand and know about the bees. Just keep reading and learning, that will be your key to unlocking so much undecisiveness. Lean on our forum members to ask the questions.
If you have specific things that you would like to learn about, use the search function in the forum, it will take you to many posts that will alleviate many of your needs to know things. It is a powerful learning tool.
About the glass jar, bummer that it was such a difficult task. The glass jar is not the only way to feed the bees. It does not have to be an exact size, you can always alter your equipment in your colony, these things you will learn. There are many, many posts about the feeding of the bees and methods that people use. If you can spend some time doing some searching, do it, it will help you out so much you won't believe it. So, good luck with your new bees, I am glad to see that you have kept your chin up and are carrying on....that is strength. Have the most wonderful and great day, lovin' our lives we live. Cindi