Look, I'm sorry to say it, but if you're resorting to such messages maybe you're not really motivated or interested enough to learn about electronics.
You don't need an oscilloscope to make some simple circuits and practice, you don't need helping tools to do SOMETHING.
A solder iron of the "firecracker" style is not great, but it works. A digital multimeter can be very cheap, could cost even 2-3 dollars on eBay or some local small markets:
http://www.ebay.com/sch/i.html?_from=R40&_sacat=0&_nkw=multimeter+830b&_sop=15If the fact that you're poor stopped you from getting such a basic tool as a cheap multimeter, maybe it's like I said.. maybe it's not something you should do.
You don't even have to pay for parts - just go to some malls that have recycling boxes and pull out some broken power supplies, chargers etc and you have capacitors and resistors and basic components.. go to your local trash dump and talk to the people there to let you take some old tvs or radios or something like that.
Go to some tv repair people, these have unrepairable electronics they keep for spare parts , they may be willing to give you components for free
See some second hand computer stores, sometimes they get a shipping container of old computers or a truck load and find some very old computers they can't sell (pentium 1, 485) and they may be willing to give you for free or for a few dollars (take out parts off video cards, power supplies etc)
I'm in Romania.. we have poor people, I was also poor for a long time, my parents aren't rich... My folks were so poor that I was ashamed to take money from them for university, so I was working while I was there and managed to graduate university.
Luckily I was very passionate about programming, learned programming at school and I'm doing well as a freelancer now and I can now afford to buy equipment but even when I was poor in school, I could put some money aside and buy every few months something.
Greece isn't even as worse as Romania.. you guys have better climate, you work less, you had more holidays, holiday bonuses and all that, so don't tell me you can't afford to spend 3-4$ on a multimeter.
Participating at contests is just stupid and it's like lotteries - you have to participate in 50-100 contests to win once and win what? Something you won't afford to pay customs taxes because you don't have money in the first place?