don't buy a table just for this...where are you playing, can you find time to get to that table? that would be ideal so you get the feel for what you will really be facing
if one of us could spend some time on the table with you it would be much easier to help you with a few basics so we could demonstrate and give you feedback when you try it
but OM has got the right idea on defense...you can practice ball control but in a week you won't get much out of that except maybe to make you a little more comfortable...won't hurt but keep your expectations low
get as much table time as you can and as I said on the table you will play on, or one just like it, if possible
while you are on the table, practice moving your hands from one rod to another to get used to where they are at on the table because you are playing singles and if the other person is a beginner like you, you will be reaching and moving for balls all the time
also, when the other person has the ball on their 5 bar or in goal, keep one hand on your goalie rod as a last ditch effort if a ball is rolling toward the goal and to make them think a little more...this means if they have the ball on their 5 bar you will defend with your right hand - again, as part of your table time and work on moving from rod to rod, even without someone to play, practice doing this and moving your men around and moving your hands from rod to rod so you will be comfortable
if you know someone who will put some table time in with you to help you warm up then it will do much for you to play them as much as possible to work on these things
also, think about what OM said about defense...what he was talking about was defense against the other person when they have the ball on their 3 rod
break the goal into 3 equal parts so you have a general idea that your men can basically cover 2/3 of those holes...avoid 2 things...1st, dont be hyper and try and jump all over the place and race the person to open holes and 2nd don't sit dead still and then jump at any movement the other person throws at you
keep your guys basically in the middle of the goal, as OM said about 2 fingers apart, and bob them about 1 inch either direction, in and out, as random as possible...some movement, not hyper, home base is the middle of the goal
what you want to do is make it hard for the other person to see a good big hole, keep from creating big holes by jumping too much, and make them shoot a perfect or totally lucky shot to score
now, if he is a "scrub" (no offense) like you, then he won't have the ball on his 3 row trying to do much of anything it will be wacking at the rolling ball mostly and that goes back to be comfortable moving from rod to rod
the only exception to the 3 rod D I am talking about is if the have the ball on the outside men (close to the near or outside walls) in this case, you will want to use the same defense we talked about except you want to move it about 2 inchs toward the side he has the ball making the short side harder to see and hit
you will want to keep your guys in what is called a standard formation - you can see what this looks like in the link here
http://www.discoverahobby.com/learnfoosball.htmI am looking for some other diagrams that I thought I could find but not so far...I will find them and if they are helpful as I think they will be, I will add in another post
questions so far?