Without seeing your circuit diagram
As you have been instructed in your other thread(s), use split power supplies for the opamp. No opamp is going to work with signals below ground when you power it with a single positive supply.What operational amplifier tolerates signals below ground?
Take a step backwards here.Sorry. I am a beginner. This all very new to me. Any websites for beginners that will
Teach me how to do this?
Try this Google search: (over 9 800 000 hits)Any websites for beginners that will teach me how to do this?
Clearly the best solution for a beginner. Firstly it allows them to get over a significant hurdle about Potential Difference and what it means to the designer and secondly, they can continue with the project, ignoring the offset problem and using a 'regular Ground' connection.Connect a pair of 6 volt or 9 volt batteries in series
and declare their junction "ground".
If you are at a really basic level then you really need to do your own searching for information (Q and A is unlikely to work). There are so many sites - some good and some bad - with information and you need to look at a lot of them (perhaps a dozen) and find one the makes sense to you and with a style you like.