I have suggested websites that require you to buy plans in some cases. I am not certain if the website is a legitimate business advertisement; I suggest that if you do buy plans from the Internet you buy collectively and start with small purchases. With all of the projects listed it is best to work in groups, to get volunteers who are trades people (like machine shop workers, plumbers, electricians, etc.). Always work on projects in groups ... it is safer, easier and much more fun.
If you don't know the answer to a problem, someone in your community probably does. Don't be afraid to ask the question 'why' about anything that is important ... and don't stop asking why until you clearly understand the reason. And finally, if no-one in the community can help, the Internet can be useful. There are numerous websites that have online question and answer sessions via email. And you may find an organization that is working on the same project you are, and can email them (if they have time to answer your email). There is an answer to all of life's problems, just take the time and applied wisdom to determine who might be able to help. Sometimes it's just time to pray, and go to the real source of all of life's answers.
If you live in the city and you feel you live in sub-standard housing, see this site: