great tips.. i always eat street food, sometimes its cheaper than cooking!!! I am such a budget backpacker, I sometimes also live on pasta, i cook in hostels. there are so many tricks!!
Also there is always a free bin of food.. hahah.. I always pick one pricy thing to do in each place, and sometimes i will find what i want to do, and volunteer there and then its double the fun.. when i came here i went to a spanish school, as a volunteer.. i saved a little money and participated in classes... i had to pay still but with a discount!!!
I am very picky on who i trust, i can be friends and not fully trust people!!