Struggling To Start Up an Online Business.

There are really only two things that are the big culprits in causing difficulty in starting up your online business. The lack of funds and the lack of knowledge.
No Money at all & no computer.
This is easy - go away and do other jobs until you are in a position to have access to these basic items. Or find someone who will be willing to allow you the use of their computer for a few months.
No money or very limited funds.
The lack of funds is a very minor stumbling block. The reason I say this is that everything can be done for free. Admittedly you would still need to have a compute and be connected online, and I suspect that even that problem could be overcome for awhile until your income begins. Doing it all the free way is not as easy as having limited funds, but as soon as you have some income you would be able to reinvest it into your business and see a quick growth.
The more you are starting to earn the more you will be able to subcontract out the work that takes up the most time in the beginning.
No training or knowledge.
Not knowing what to do is always going to be a very big problem. If you are in a position to afford a good quality training course then that is the perfect way to begin. The good courses out there are very comprehensive and will cover all of the different ways you can earn money online. The advantage to this general training is that you will be fairly sure which way you want to go after your training over.
Good training also teaches you to prepare a business plan and then how to implement it, and then how to stick to it. If you had a good plan in place then you would not find yourself in a confused spin. I do agree that sometimes you will have to earn some money in a certain way to get started and then change direction later. The good news about this way is that very often the first way will keep running even after you redirect yourself.
Never let anyone tell you not to buy into a good training course at all. The huge amount of time alone that you will save is already worth the money spent. Even better is the security you will have knowing that there are probably no holes in your plan. To this day I am still so pleased with the initial grounding I got from my training course.
Having said that, there are very many good products out there available for free. Where you must take care that you do get the correct information. In fact it would be a good idea to continually to keep looking for free training until you are quite sure that you know as much as is possible.
It is even possible to receive mentorship for free for a while and as long as you are showing the correct amount of effort and enthusiasm, you will go far.
Please do this, educate yourself, set and stick to a plan and work hard. The rest will fall into place.