the ser thing is yo, usted, el, ella, vosotros, nosotros, ellos, ellas.
how to say (using the ser thing) he is at college.
well, you wouldn't use "the ser thing" to say that someone is at college, you would use "the estar thing", and as stated above, you can conjugate it yourself, or very easily look it up, if you prefer
the "ser thing " is the verb,"to be"
the verb to be I am........yo soy you are usted es he is........el es they are ...ellos son
yo estoy en la universidad el esta en la universidad so on and so forth
you try the rest is fun just like solving a mathematical equation. You will get a rush when you get the answer.