Performing A Match Query Between Two Tables

Hi,

I recently got a new job and am trying to learn access for it. I have two tables. Both of them have client id numbers. They are both supposed to have the same client id numbers. However, Table 1 has more client id numbers than Table 2. I want to do a match query that selects the client id numbers in Table 1 that do not have a corresponding match in Table 2. How would I go about doing this?

Also, I want to do a simple select query where I select the client id numbers in Table 1 whose first two numbers are "88." How would I do this in the query or SQL form.

Do you have any recommendations about the best way to learn Access for practical applications like this? I'll also need to get good at making Forms which seem fairly complicated.

Thank you for your time.

Rajiv