Karen,
I am with you. All of my QB experience has been through trial and error. I went through a year and a half to get a diploma in bookkeeping/accounting through a correspondence school years ago. At that time, it was all done on paper and with ledgers. I'm still vague on debits and credits and which is which depending on whether I am working with the asset side or the liability side of things. I have played around in QB a lot and learned what affects what with my entries. If you are going to contract someones bookkeeping, I would think you should have a working knowledge of how your entries affect other figures and accounts within QB.
I would suggest taking a couple of accounting courses at a local college such as Acctg I & II. For around 12 to 24 credit hours you can obtain a couple of accounting certifications.
I am currently working on an Associates in Paralegal studies through the
www.iowacconline.com (Iowa College Consortium). This is a group of participating Iowa Community Colleges who in a combined effort offer online classes toward degrees or as individual courses. You do not have to be a resident of the state and the tuition is quite reasonable.