The description in the book describes touching the right hand in front of the left foot while the right leg goes up, then says to repeat it with the left hand going down, and that you've completed one rep when you've done that. Then, it says to switch legs. So, when doing ladders (1 rep, then 2 reps, then 3 reps, etc), is one to do the right leg twice as one rep, then do left twice, right twice as the second two reps, and so on? Or is "one rep" supposed to be twice on the right and twice on the left?

I would consult his website, but [the forum](https://www.marklauren.com/forum/) seems to perpetually be down.
['https://fitness.stackexchange.com/questions/28699', 'https://fitness.stackexchange.com', 'https://fitness.stackexchange.com/users/8039/']
Do not regret this break from your weightlifting and take the opportunity to become an even better weightlifter.

The trainers I have had, most often has used about half of the workout for yoga exercises to improve flexibility, range, mobility and core strength.
Exercises like over-the-head-squats demands extremely high flexibility.

You can highly improve quality of your squats by doing air squats in front of a mirror.

You can improve your core strength and stability far beyond what you think is possible just by doing functional training and calisthenics - without any equipment.

If you can afford a little for a smaller device, I will definitely recommend you a cheap suspension-trainer aka TRX (cheap ones are as good as the expensive ones), which you easily can attach to a door, and sliding exercises like this: <http://www.6-directions.com/>
You can just use floor-cloths for sliding exercises. I use to do so.

If you dare to try advanced exercises, Switch ball can take your weightlifting to the next level, but I recommends proper instructions.

If you have room for more than that, then get inspiration from crossfit and use sandbags (or water bags), tires, logs, etc. as weights.
If you consider yourself handy then you could consider building some weightlifting equipment yourself. It is cheap and surprisingly simple.

Although I do recommend that you do buy the barbell since making one out of wood or other common materials would be considerably weaker or larger if you try to maintain the same strength. 

[Buff Dudes](https://www.youtube.com/channel/UCKf0UqBiCQI4Ol0To9V0pKQ) have a Youtube channel where sometimes *Buff Dad* has tutorials on how to make Gym Equipment. [This](https://www.youtube.com/watch?v=6dy5eyMDt3c) is an example for a power rack. I've found that the procedure is quite simple and doesn't require any advanced tools. The material is mostly wood so it is very cheap.

As for weight plates, there are again many tutorials on Youtube ([this one](https://www.youtube.com/watch?v=EpwewKou_R0) for example) where people show you how to make weight plates from concrete. It's about $5 for a 25kg bag of concrete, so you could make ~30kg (some water is retained from curing, I'm not sure how much) of weight plates for only the cost of a bag and a mould which would be less than $5.

Although it would take a considerable amount of time you could build yourself a home gym for a couple of hundred dollars.