There are some good books out there on SAQ with lots of drills
but to save you money, I'd buy a set of 40 Flat cones and make your own drills up.
1-to-3 Work to Rest Ratio so you can go hard/Fast each time
8 x 5yds to Cone & Back
4 x 10yds to Cone & Back
2 x 20yds to Cone & Back
1 x 40yds to Cone & Back
Find three friends to do it with have 2 minute break & water after each full cycle.
If your lucky to have a team to do it with 16 guys then do it in groups of four as a race.
Make sure you alternate which foot you turn on or you'll get dizzy.
Set up cones in a 20x20 box with 1 cone in middle.
Start on in the middle and sprint to cone and get into defensive breakdown position, either sprint back to centre cone (crease) or if brave shuffle sideways to next cone then sprint back to centre cone and sprint to next corner cone and shuffle sideways again.
On the shuffle get as low as you can and don't bounce or jump in the air. Keep feet as close to ground and a&& as low as possible as if you playing Defence.
Your Quads will hate you to start off but if you do it 2/3 times a week when season starts nobody will be able to dodge you.
Can be done with or without Pole, if your feeling good try poke checkng at each corner and as you shuffle.
Again 100% speed is important, don't skimp on quality, you may not be able to do much to start or rest has to be longer, but you need 100% intensity because that is what you should use in a game.
Be creative, do it with a mate, use stopwatch to record times and log what you've done so you will be able to see how much you have improved.
Training Logs/Diary are very useful for motivation and confidence as you can track your own performance, set goals targets and tick them off as you achieve them.
A training partner(s) is useful as well as competition is a motivator as well.
If you have a mate who plays rugby (back) go training with him or join their preseason group.