I have a gym and locker room at work but sometimes it's too busy here to workout at lunch so I had to get some basic equipment to workout at home with in a pinch. I use it in my garage so it needed to take up no space.
I built a pullup bar in my garage and bought pushup bars. Bought a weight vest and a set of bands.
The bands I got were TO bodylastics and they work pretty well.
Band resistance feels different than freeweights. Free weight feels hardest at the bottom half of the movement and is constant throughout, bands feel hardest at the top half of the movement (as you stretch them they get harder).
I love them because they take up almost no space and were only $100. The best part is the bands are interchangable... you have handles with metal rings and bands with carabiner clips. So you can just add multiple bands to increase resistance.
The main issue I had with them was for leg work... squats in piticular. My legs can overpower my arms so I build a "barbell" to attach my bands to. I took a 48 inch * 1 1/2 inch wooden dowel and screwed 2 eyehooks into the ends (drill pilot holes first). Bough 2 carabiner clips and 2 12 inch chain extentions. Clips to eyehooks, chain to clips and band to chain. Total cost $8.00
You can use that as you would any barbell movement.
You could just do 1 leg squats but I figured it was worth the $8.00 to have a "barbell"
At the end of the day, resistance is resistance. Just workout hard with them and I'm sure you will see results.
If you're at a point where you're doing more than 12 reps no problem, you need "heavier" bands.