What you need is called Data Modeling. There are a few simple rules stating 1: Each Table should contain iinformation about ONLY one subjecct. 2: Each Column within a Table should contain ONLY one Face or value related to the table's subject and have a UNIQUE COLUMN NAME. 3: One column in each Table MUST contain a UNIQUE value so individual records can be found (it is often called the Primery Key).
Relationships are established between different Tables then table "B" contains a Column that stores the Primary Key value from Table "A". That column in Table B is called the Foreign Key and it establishes a relationship between Tables "A" and "B".
Another way is to build a single query using both Tables as the query data source and using "drag and drop" to establish an undefined relationship. To do this the above relationship fields MUST EXIST so you can grab the correct field to "drag" somewhere.
This stuff is KEY to becoming a guru in ANY database. Good luck and just checkout Key values in your manuals!