diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
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 # Pool-Calculator
 
-Simple calculator for balancing pool chemistry using various products and the ability to select multiple chlorine options 
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+Simple calculator for balancing pool chemistry using various products and the ability to select multiple chlorine options.
+
+## NOTES
+
+- "Calculations" or "Math" folder of some kind that has three main files: Base, Pool, and Spa. Base has all the base formulas for pools and spas, scaling to the actual pool volume, and converting granular to liquid or vice-versa; The Pool File handles chlorine demand calcs, does "granular landing zones" (if using granular or a mix to defeat ammonia), and tracks "cya lockout" risk levels; The Spa file simply scales the math down to spa-size, has bromine-conversion multipliers, and would trigger warnings for high bather load risks or high-temp off-gassing
+- 
diff --git a/config.py b/config.py
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+This is where you store hardcoded industry numbers. If a manufacturer changes a formula or you want to adjust your store's default targets, you only edit this one file.
+
+    What it holds:
+
+        Liquid chlorine concentration factor (e.g., LIQUID_REDUCTION_FACTOR = 0.75 for your 12.5% logic).
+
+        Standard target landing zone (e.g., TARGET_LANDING_FC = 3.0).
+
+        Volume baselines (POOL_BASE_VOLUME = 10000, SPA_BASE_VOLUME = 100).
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diff --git a/formulas.md b/formulas.md
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+## Stabilizer
+CYA Increase (ppm) = [Pounds of Stabilizer X 12] / (Pool Gallons / 10,000)
+
+## Adding Stabilizer
+Target CYA = Current FC / 0.075
+
+## For Salt Pools
+Target CYG (saltwater) = Current FC / 0.05
+
+## Dry Acid to Muriatic
+1 pound of Dry Acid = 26 fl oz of 31.45% Muriatic
+1.25 pounds of Dry Acid = 1 quart (32oz) of Muriatic
+5 pounds of Dry Acid = 1 Gallon of Muriatic
+
+## Alkalinity Raising
+Pounds of Sodium Bicarbonate (BP100) = [Desired TA Increase (ppm) * 1.4] / (Pool Gallons / 10,000)
+
+## TA Lowering
+
+
+## Total Alkalinity and Adjusted Alkalinity
+Total Alkalinity is water's ability to resist pH changes. TA is the sum of all the concentrations of chemical ion species in your pool water that can react with (or consume) a hydrogen ion (H+). 
+Adjusted Alkalinity is the Total Alkalinity minus the CYA multiplied by Correction Factor, which is based on the pH.
+
+However, since pools are usually between 7.2 and 8.2 pH, just use the following to get Adjusted Alkalinity:
+AA = TA - (CYA * 0.33)
+
+Basically, keep TA at around 80-120 during the winter, and 60-90 during the season
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diff --git a/main.py b/main.py
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+from PySide6.QtWidgets import QApplication, QMainWindow, QPushButton
+
+class MainWindow(QMainWindow):
+    def __init__(self):
+        super().__init__()
+        self.setWindowTitle("Hello, World!")
+
+        button = QPushButton("Exit")
+        button.pressed.connect(self.close)
+
+        self.setCentralWidget(button)
+        self.show()
+
+app = QApplication([])
+window = MainWindow()
+app.exec()
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diff --git a/products.py b/products.py
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+++ b/products.py
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+Possible Structure of Code in this File
+
+class BioGuardProduct:
+    def __init__(self, name, active_ingredient, fc_factor, cya_factor, ch_factor, weight_unit="lb"):
+        self.name = name
+        self.active_ingredient = active_ingredient
+        self.fc_factor = fc_factor      # ppm change per unit in 10k gal
+        self.cya_factor = cya_factor    # ppm change per unit in 10k gal
+        self.ch_factor = ch_factor      # ppm change per unit in 10k gal
+        self.weight_unit = weight_unit
+
+# Instantiated store inventory:
+INVENTORY = {
+    "burn_out_73": BioGuardProduct("Burn Out 73", "Cal-Hypo", fc_factor=8.7, cya_factor=0, ch_factor=6.1),
+    "super_soluble": BioGuardProduct("Super Soluble", "Dichlor", fc_factor=6.7, cya_factor=6.0, ch_factor=0),
+    # Add Low 'N Slow, Stabilizer 100, etc.
+}
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