Strength training with no gym

I'm sure it's possible, but you may need to be creative for adding resistance. There are lots of bodyweight exercises you could do, but eventually you'll need to somehow add weight to that. If you were doing pushups, you could try putting something on your back (cinder block? ha...).

I'm sure it's possible, but you may need to be creative for adding resistance. There are lots of bodyweight exercises you could do, but eventually you'll need to somehow add weight to that. If you were doing pushups, you could try putting something on your back (cinder block? ha...).

Or do one arm pushups.

The OP is a female, chances are a one arm pushup will never be too easy for her. Can happen with males (though plyometric one arm pushups are always the bomb, no better exercise exists for punch power).

Yes it is definitely possible to do. Bodyweight can provide all the resistance you'd ever need. You can make things easier by adding ways to weight your body.

At the elite levels of bodyweight strength training are male olympic gymnasts, who are pound for pound as strong as anyone.

Lifting heavy things that are not weights is not the way to go. You can do things here and there, but building a cohesive program would be impossible.

One can build a great program using bodyweight.

Yep,
I can't afford a gym membership either. We are fortunate to have some beginners equipment including some weights and such but I have still been using a lot of body weight resistance until I get strong enough to bypass that step and hopefully by then I can mention I want a gym membership for my birthday or Christmas lol. Also resistance training bands are a good help. They are inexpensive, easy to store and can be used to do a large variety of different exercises.

Check out Nerd Fitness - they advocate non-gym workouts. One of the things they suggest is milk jugs that you fill with different amounts of water to act as weights. As you can tolerate more you add more water into the jug. They have exercises you can do at a playground also. Excellent source of ideas.

44 best bodyweight exercises

https://www.youtube.com/watch?v=POdzasJklxw

and 44 best bodyweight exercises for women, although you don't have to do women-only workouts.

https://www.youtube.com/watch?v=KutF8wPlk4Q

I agree with the others that have posted here; I'd go with bodyweight exercises or try to get some adjustable dumbbells. If you have a friend with a gym membership, see if you could occasionally "tag along" as a guest (some gyms let you bring in a guest for free) if you still want to get some different kinds of exercises in using machines, barbell, etc.

ETA: Here are some links with suggestions for household items you can use for weights:
http://www.3fatchicks.com/8-household-objects-that-work-as-weights/
http://www.fitday.com/fitness-articles/fitness/exercises/no-equipment-strength-training-with-common-household-items.html#b
http://www.veganfitness.net/viewtopic.php?t=15510

I absolutely love Mark Lauren's book, Body By You. It's a strength training program geared towards women and you don't need any extra equipment besides things like a chair. It's only three times a week for 30 minutes. His other book, You Are Your Own Gym, is also highly recommended in the body building community (geared more towards guys or more advanced women)

In the 6ish weeks that I've done it my body has noticeably changed-

upper arms have muscle definition and I've lost the 'chicken wing' flap underneath yay!
shoulders and upper back look amazing-can't believe they belong to me lol
starting to see some definition in my stomach area
butt is tighter
I'm stronger-can lift things that I used to struggle with.

Got it at Barnes and Noble for $16