See my comment above for a fuller answer but in specific response to the lack of gym membership, get yourself a pull-up bar that fits in a door frame non-permanently. Pullups and chin-ups are really hard to begin with so you can just hang from it or use a chair to get into the top position and lower yourself as slowly as you can.
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See my comment above for a fuller answer but in specific response to the lack of gym membership, get yourself a pull-up bar that fits in a door frame non-permanently. Pullups and chin-ups are really hard to begin with so you can just hang from it or use a chair to get into the top position and lower yourself as slowly as you can.