How the genome assembly be done after k-mer counting? As far I know, before assembly of a genome, all k-mers from read should be counted. * But after that, how the genome assembly be done? * Is there any other thing needed along with k-mer counts? * How the standard value of k is determined for a particular genome assembly? or is it fixed for all kind of assembly? I just want to know the basic concept that how this actually been done. Explanation with flow char or algorithm is much more appreciated. I went through some similar question, but those did not help me too much.

There are multiple ways of doing genome assembly. The term you are probably looking for is "De Bruijn-Graph based assembly". Using this you can find a lot more different explanations of how it is done.

Another frequently used method is "Overlap Layout Consensus assembly", which in fact is not based on k-mer counting.