Welcome Big Jim!
Let me reassure you that by obtaining a BG Meter you are heading in the right direction. All the folks here are really helpful, and encouraging. You are about to embark on a long journey, there will be some bumps in the road, but by your determination, and yours alone you will get to grips with this, and your health and well being will improve.
There is a saying in business "If it ain't measured it ain't managed" So test and retest, before meals and 2 hours after meals. If the after meal reading shoots up then you know that something on your plate doesn't agree with you, adjust the meal next time by removing an ingredient at a time. Eventually you will find the culprit. It seems daunting at first, but with time you will find the 'New normal' and a healthier you