Links to sites that I check often for information.

Search Autodesk Inventor Help

https://www.google.com/search?q=site%3Ahelp.autodesk.com%2Fview%2FINVNTOR%2F2023%2FENU%2F+

Accessing iProperties
https://modthemachine.typepad.com/my_weblog/2010/02/accessing-iproperties.html

Create a Windows Form, Display It, Get Instant Feedback From Your Choices, all from one iLogic Rule.
https://knowledge.autodesk.com/support/inventor/learn-explore/caas/simplecontent/content/create-windows-form-display-it-get-instant-feedback-your-choices-all-one-ilogic-rule.html?_ga=2.214065297.784374862.1642953131-2050733507.1582228725

Use iLogic to get files from the Vault
https://forums.autodesk.com/t5/inventor-ilogic-api-vba-forum/access-download-folders-or-files-from-vault-via-an-ilogic-rule/m-p/10446158/highlight/true#M126141
https://www.cadlinecommunity.co.uk/hc/en-us/articles/360000340498-Inventor-iLogic-Getting-components-from-Vault-

Get the factory document from iLogic
https://forums.autodesk.com/t5/inventor-ilogic-api-vba-forum/retreaving-custom-iproperty/m-p/10955051/highlight/true#M134730

Dim oPropertySetName As String = "Design Tracking Properties"
Dim oPropertyName As String = "Description"

Dim doc = ThisDoc.Document
If doc.ReferencedDocuments.Count > 0 Then
	Dim refDoc = doc.ReferencedDocuments(1)
	Dim stdObjects = StandardObjectFactory.Create(refDoc)
	Dim desc = stdObjects.iProperties.Value(oPropertySetName, oPropertyName)
	MessageBox.Show(String.Format("Description in {0} = {1}", refDoc.DisplayName, desc))
End If

Creating forms with iLogic

https://forums.autodesk.com/t5/inventor-ilogic-and-vb-net-forum/vba-object-with-configurations/m-p/12177742/highlight/true#M156581

Autodesk University papers

How Deep is the Rabbit Hole? Examing the Matrix and other Inventor Math and Geometry Objects.
https://modthemachine.typepad.com/files/mathgeometry.pdf

Exploring iProperties and Parameters
https://modthemachine.typepad.com/files/ipropertiesandparameters.pdf

Model state stuff

The Component.IsActive function in a delegated BOM model state does not update the BOM in Inventor 2022
https://knowledge.autodesk.com/support/inventor/troubleshooting/caas/sfdcarticles/sfdcarticles/The-Component-IsActive-function-in-a-delegated-BOM-model-state-does-not-update-the-BOM-in-Inventor-2022.html

Create and Activate Model States in the assembly and subassemblies
https://forums.autodesk.com/t5/inventor-ilogic-api-vba-forum/example-create-and-activate-model-states-in-the-assembly-and/td-p/10391500

Can't suppress sub-parts in Model States
https://forums.autodesk.com/t5/inventor-forum/can-t-suppress-sub-parts-in-model-states/m-p/10383812/highlight/true#M830851

Working with Model State API
https://help.autodesk.com/view/INVNTOR/2022/ENU/?guid=GUID-045E78DB-DBE3-4220-8EBC-29EB53890E1A

Working with PropertySets and Model States
https://adndevblog.typepad.com/manufacturing/2022/01/working-with-propertysets-and-model-states.html

 Porting guide from Level of Details to Model states.
https://adndevblog.typepad.com/manufacturing/2022/05/porting-guide-from-level-of-details-to-model-states.html