Where do you get the solar plexus deals with wisdom?

Correction, the orange-ray or naval chakra deals with other people individually.

Red ray is the foundation; orange ray the movement towards yellow ray which is the ray of self-awareness and interaction. Green ray is the movement through various experiences of energy exchanges having to do with compassion and all-forgiving love to the primary blue ray which is the first ray of radiation of self regardless of any actions from another.

https://www.lawofone.info/results.php?s=41#25

Best thing to do to heal and connect through chakra's is to do yoga and meditation, however yoga is the father of connection in the sense that you will be doing the work without being aware of it and the changes will happen through the movement that you do... This is a gentle way to clear and connect it will also help you to align all chakras. I recommend working on chakra's in tandem due to balance issues if one does not.

Yes, I suggest you read up on chakras online. A wealth of information on them, and if you want to focus solely on the Solar Plexus, you can choose to do so.
Do bear in mind ALL chakras are connected like cogs in one 'machine'. If one cog is blocked or not turning properly, the others cannot function properly either.

I also don't get your title "Solar Chakra SOUL"? What do you mean by that?

There are actually 2 additional chakras that I've heard of, SoulStar (white/gold) which is above the Crown and Earth Star (brown) which is located around the area of the feet.
I wonder if you are referring to the SoulStar chakra?

My experience with the solar plexus chakra is that it handles ''power'' dynamics.
When i invoke power or something else related to power,it passes through the solar plexus.
It also has to do with the fire element,so whatever falls under this category,will find it's way through the solar plexus.

For example ''light'' falls under the fire element.So if you invoke the light of something,you'll feel the energy of it at your stomach.(solar plexus area).