What are some techniques to use to get better at C programming?

One of the ways to learn programming at high level is to understand how the instructions and data are being processed and run in low level. C is the most close high-programming language  to hardware. So it is a good start point for you. Try to understand the difference between how data is statically or dynamically allocated, which variable or data structure declaration is in stack or heap and which are allocated during compile time or run time and etc. When you try to develop code with such a level of concern, it widens your conception of what you are doing rather than learning development in high abstraction. Later on when you decide that you have gained the basic concept of computation, you may gradually switch to high level languages 

First, learning programming takes time: http://norivg.com/21-days.html. So be patient.Then, IMHO, C is not the best language to start learning programming. I would suggest to read https://mitpress.mit.edu/sicp/ (an excellent, freely available book to learn programming) and practice some Scheme. Once you have practiced & learned it, consider reading some https://en.wikipedia.org/wiki/Introduction_to_AlgorithmsLater, learn several programming languages and programming paradigms, and learn something about computer architecture & instruction sets. C is IMHO a quite difficult language to learn, because it is quite low-level.I suggest installing & using Linux on your laptop (and learn the command line). Study the source code and contribute to some https://en.wikipedia.org/wiki/Free_software (but start with some small one, e.g. less than a hundred thousands of source code lines).

Practice and practice. There's no way out. Try to catch the logics, don't mug up anything at all.