You may want to start by investigating the difference in roles and scope of practice between LPNs and RNs. If you know up front that you want to be an RN, you may as well skip the intermediate step of LPN.
The more you know and understand about nursing and your specific goals to begin with, the more efficient you can be about pursuing those goals.
I, too, am curious about how you decided to turn your back on a field in which you just
went to the trouble and expense of taking a graduate degree, to start from scratch in something entirely different.
There are numerous threads on this site that discuss distance learning options, nursing as a major career change, and males in nursing (I'm guessing you're male from your screen name), among the relevant topics I can think of right off the top of my head, that may be interesting or helpful for you to review.
Best wishes for your new journey --