You have completed your 12 and need to start earning very soon and financially cannot afford to lose time and spend money
A. Please look into the National Institute of Open Schooling. There are a few vocational courses like Solar/Bio-gas technician, Bakery, Welding, Carpentery, catering etc. (http://www.nios.ac.in/departmentsunits/vocational-education/stand-alone-courses.aspx). Each state has a regional vocational training institute, you can also look into this.
B. Once you finish a course that suits you, take up a job that give you a basic earning. After starting the job, then you an enroll into any of the evening colleges that have B.Com or B.A and compelete the bachleor's degree.
C.If the job you get is a good one and involves shift work. Then you can choose to complete your B.A or B.Com via distance mode from IGNOU.
Once you finish this, then review your progress and the career options. You can complete your B.Ed from IGNOU or other government recognised universities, then apply for a government job as a teacher which will give you security, health and pension benefits. For the government teachers job, you need to take up the PRT/TGT exams. After joining your job as a teacher, you can enroll for a Master's degree that will help you to be qualified to write the NET/SET exams which in the step forward to work as a lecturer and upwards at the college level.
If you take up B.Com and do really well, then you can prepare for the bank recruitment exams which are very competitive but gives you a good chance at having a stable career.You can look into IBPS PO or SBI PO exams. Once you start your job, then you can complete your M.Com also by distance mode.
Think along these lines, see what your core skills are and the opportunities close to home and in the place you live in. Register for the common job portals for freshers, naukri.com,linked.in etc and regularly keep visiting the sites for jobs that would suit your profile.