How do I add new records to multi tables from one form or do I need sub forms with one click?

[Paranap]

I am creating a training record database, I have made the tables but need to work on the user interface.
What I am struggling with is I can have a lesson which is created with an author lesson title, lesson description and supporting documents and also lots of lesson objectives so I have one lessonID with multiple lesson objectives linked to it.
How can I create a form where I can write in the unique lesson details and then have multiple lesson objectives from say a drop down box link to another table.

Thank you

[orange]

How about posting a jpg of your tables and relationships. Screen capture would work.
A 4-5 line overview description in plain English would also help.

[Paranap]

Here you can see the relationships. So I want to create a lesson which will populate tblLessonPlan but also each lesson has a number of trainingID's to them so I when I add a lesson I need to add many TrainingID's. This I want to do from a user friendly form.

Thank you